598 lines
16 KiB
C
598 lines
16 KiB
C
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// Test library configuration for posix.cfg
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//
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// Usage:
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// $ cppcheck --check-library --library=posix --enable=information --error-exitcode=1 --inline-suppr --suppress=missingIncludeSystem test/cfg/posix.c
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// =>
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// No warnings about bad library configuration, unmatched suppressions, etc. exitcode=0
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//
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#include <stdlib.h>
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#include <stdio.h> // <- FILE
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#include <dirent.h>
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#include <sys/mman.h>
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#include <sys/socket.h>
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#include <sys/time.h>
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#include <sys/types.h>
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#include <dlfcn.h>
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#include <fcntl.h>
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// unavailable on some linux systems #include <ndbm.h>
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#include <netdb.h>
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#include <regex.h>
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#include <time.h>
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#include <unistd.h>
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#include <pthread.h>
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#include <syslog.h>
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#include <stdarg.h>
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#include <ctype.h>
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#include <stdbool.h>
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#include <wchar.h>
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#include <string.h>
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char * overlappingWriteFunction_stpcpy(char *src, char *dest)
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{
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// No warning shall be shown:
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(void) stpcpy(dest, src);
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// cppcheck-suppress overlappingWriteFunction
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return stpcpy(src, src);
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}
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void overlappingWriteFunction_bcopy(char *buf, const size_t count)
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{
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// No warning shall be shown:
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// cppcheck-suppress bcopyCalled
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bcopy(&buf[0], &buf[3], count); // size is not known
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// cppcheck-suppress bcopyCalled
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bcopy(&buf[0], &buf[3], 3U); // no-overlap
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// cppcheck-suppress bcopyCalled
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// cppcheck-suppress overlappingWriteFunction
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bcopy(&buf[0], &buf[3], 4U);
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}
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void overlappingWriteFunction_memccpy(unsigned char *src, unsigned char *dest, int c, size_t count)
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{
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// No warning shall be shown:
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(void)memccpy(dest, src, c, count);
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(void)memccpy(dest, src, 42, count);
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// cppcheck-suppress overlappingWriteFunction
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(void)memccpy(dest, dest, c, 4);
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// cppcheck-suppress overlappingWriteFunction
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(void)memccpy(dest, dest+3, c, 4);
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}
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void overlappingWriteFunction_stpncpy(char *src, char *dest, ssize_t n)
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{
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// No warning shall be shown:
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(void) stpncpy(dest, src, n);
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// cppcheck-suppress overlappingWriteFunction
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(void)stpncpy(src, src+3, 4);
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}
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wchar_t* overlappingWriteFunction_wcpncpy(wchar_t *src, wchar_t *dest, ssize_t n)
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{
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// No warning shall be shown:
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(void) wcpncpy(dest, src, n);
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// cppcheck-suppress overlappingWriteFunction
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return wcpncpy(src, src+3, 4);
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}
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void overlappingWriteFunction_swab(char *src, char *dest, ssize_t n)
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{
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// No warning shall be shown:
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swab(dest, src, n);
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// cppcheck-suppress overlappingWriteFunction
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swab(src, src+3, 4);
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}
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bool invalidFunctionArgBool_isascii(bool b, int c)
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{
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// cppcheck-suppress invalidFunctionArgBool
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(void)isascii(b);
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// cppcheck-suppress invalidFunctionArgBool
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return isascii(c != 0);
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}
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void uninitvar_putenv(char * envstr)
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{
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// No warning is expected
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(void)putenv(envstr);
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char * p;
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// cppcheck-suppress uninitvar
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(void)putenv(p);
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}
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void nullPointer_putenv(char * envstr)
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{
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// No warning is expected
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(void)putenv(envstr);
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char * p=NULL;
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// cppcheck-suppress nullPointer
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(void)putenv(p);
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}
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void memleak_scandir(void)
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{
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struct dirent **namelist;
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int n = scandir(".", &namelist, NULL, alphasort);
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if (n == -1) {
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return;
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}
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// http://man7.org/linux/man-pages/man3/scandir.3.html
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/* The scandir() function scans the directory dirp, calling filter() on
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each directory entry. Entries for which filter() returns nonzero are
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stored in strings allocated via malloc(3), sorted using qsort(3) with
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the comparison function compar(), and collected in array namelist
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which is allocated via malloc(3). If filter is NULL, all entries are
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selected.*/
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// TODO: cppcheck-suppress memleak
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}
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void no_memleak_scandir(void)
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{
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struct dirent **namelist;
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int n = scandir(".", &namelist, NULL, alphasort);
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if (n == -1) {
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return;
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}
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while (n--) {
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free(namelist[n]);
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}
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free(namelist);
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}
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void validCode(va_list valist_arg1, va_list valist_arg2)
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{
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void *ptr;
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if (posix_memalign(&ptr, sizeof(void *), sizeof(void *)) == 0)
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free(ptr);
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syslog(LOG_ERR, "err %u", 0U);
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syslog(LOG_WARNING, "warn %d %d", 5, 1);
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vsyslog(LOG_EMERG, "emerg %d", valist_arg1);
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vsyslog(LOG_INFO, "test %s %d %p", valist_arg2);
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void* handle = dlopen("/lib.so", RTLD_NOW);
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if (handle) {
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dlclose(handle);
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}
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}
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void bufferAccessOutOfBounds(int fd)
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{
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char a[5];
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read(fd,a,5);
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// cppcheck-suppress bufferAccessOutOfBounds
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read(fd,a,6);
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write(fd,a,5);
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// cppcheck-suppress bufferAccessOutOfBounds
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write(fd,a,6);
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recv(fd,a,5,0);
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// cppcheck-suppress bufferAccessOutOfBounds
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recv(fd,a,6,0);
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recvfrom(fd,a,5,0,0x0,0x0);
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// cppcheck-suppress bufferAccessOutOfBounds
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recvfrom(fd,a,6,0,0x0,0x0);
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send(fd,a,5,0);
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// cppcheck-suppress bufferAccessOutOfBounds
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send(fd,a,6,0);
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sendto(fd,a,5,0,0x0,0x0);
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// cppcheck-suppress bufferAccessOutOfBounds
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sendto(fd,a,6,0,0x0,0x0);
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// cppcheck-suppress constStatement
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0;
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readlink("path", a, 5);
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// cppcheck-suppress bufferAccessOutOfBounds
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readlink("path", a, 6);
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readlinkat(1, "path", a, 5);
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// cppcheck-suppress bufferAccessOutOfBounds
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readlinkat(1, "path", a, 6);
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// This is valid
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gethostname(a, 5);
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// cppcheck-suppress bufferAccessOutOfBounds
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gethostname(a, 6);
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}
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void nullPointer(char *p, int fd, pthread_mutex_t mutex)
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{
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// cppcheck-suppress ignoredReturnValue
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isatty(0);
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mkdir(p, 0);
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getcwd(0, 0);
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// cppcheck-suppress nullPointer
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// cppcheck-suppress readdirCalled
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readdir(0);
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// cppcheck-suppress nullPointer
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// cppcheck-suppress utimeCalled
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utime(NULL, NULL);
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// not implemented yet: cppcheck-suppress nullPointer
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read(fd,NULL,42);
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read(fd,NULL,0);
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// not implemented yet: cppcheck-suppress nullPointer
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write(fd,NULL,42);
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write(fd,NULL,0);
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// cppcheck-suppress leakReturnValNotUsed
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// cppcheck-suppress nullPointer
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open(NULL, 0);
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// cppcheck-suppress leakReturnValNotUsed
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// cppcheck-suppress nullPointer
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open(NULL, 0, 0);
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// cppcheck-suppress unreadVariable
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// cppcheck-suppress nullPointer
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int ret = access(NULL, 0);
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// cppcheck-suppress ignoredReturnValue
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// cppcheck-suppress leakReturnValNotUsed
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// cppcheck-suppress nullPointer
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fdopen(fd, NULL);
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// cppcheck-suppress strtokCalled
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// cppcheck-suppress nullPointer
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strtok(p, NULL);
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// cppcheck-suppress nullPointer
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pthread_mutex_init(NULL, NULL);
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// Second argument can be NULL
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pthread_mutex_init(&mutex, NULL);
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// cppcheck-suppress nullPointer
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pthread_mutex_destroy(NULL);
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// cppcheck-suppress nullPointer
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pthread_mutex_lock(NULL);
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// cppcheck-suppress nullPointer
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(void)pthread_mutex_trylock(NULL);
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// cppcheck-suppress nullPointer
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pthread_mutex_unlock(NULL);
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}
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void memleak_getaddrinfo()
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{
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//TODO: nothing to report yet, see http://sourceforge.net/p/cppcheck/discussion/general/thread/d9737d5d/
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struct addrinfo * res=NULL;
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getaddrinfo("node", NULL, NULL, &res);
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freeaddrinfo(res);
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}
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void memleak_mmap(int fd)
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{
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// cppcheck-suppress unusedAllocatedMemory
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// cppcheck-suppress unreadVariable
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void *addr = mmap(NULL, 255, PROT_NONE, MAP_PRIVATE, fd, 0);
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// cppcheck-suppress memleak
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}
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void * memleak_mmap2() // #8327
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{
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void * data = mmap(NULL, 10, PROT_READ, MAP_PRIVATE, 1, 0);
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if (data != MAP_FAILED)
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return data;
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return NULL;
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}
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void * identicalCondition_mmap(int fd, size_t size) // #9940
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{
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void* buffer = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
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if (buffer == MAP_FAILED) {
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return NULL;
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}
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return buffer;
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}
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void resourceLeak_fdopen(int fd)
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{
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// cppcheck-suppress unreadVariable
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FILE *f = fdopen(fd, "r");
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// cppcheck-suppress resourceLeak
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}
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void resourceLeak_mkstemp(char *template)
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{
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// cppcheck-suppress unreadVariable
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int fp = mkstemp(template);
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// cppcheck-suppress resourceLeak
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}
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void no_resourceLeak_mkstemp_01(char *template)
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{
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int fp = mkstemp(template);
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close(fp);
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}
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int no_resourceLeak_mkstemp_02(char *template)
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{
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return mkstemp(template);
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}
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void resourceLeak_fdopendir(int fd)
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{
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// cppcheck-suppress unreadVariable
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DIR* leak1 = fdopendir(fd);
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// cppcheck-suppress resourceLeak
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}
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void resourceLeak_opendir(void)
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{
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// cppcheck-suppress unreadVariable
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DIR* leak1 = opendir("abc");
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// cppcheck-suppress resourceLeak
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}
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void resourceLeak_socket(void)
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{
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// cppcheck-suppress unreadVariable
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int s = socket(AF_INET, SOCK_STREAM, 0);
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// cppcheck-suppress resourceLeak
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}
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void resourceLeak_open1(void)
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{
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// cppcheck-suppress unreadVariable
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int fd = open("file", O_RDWR | O_CREAT);
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// cppcheck-suppress resourceLeak
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}
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void resourceLeak_open2(void)
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{
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// cppcheck-suppress unreadVariable
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int fd = open("file", O_RDWR | O_CREAT, S_IRUSR | S_IWUSR);
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// cppcheck-suppress resourceLeak
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}
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void noleak(int x, int y, int z)
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{
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DIR *p1 = fdopendir(x);
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closedir(p1);
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DIR *p2 = opendir("abc");
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closedir(p2);
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int s = socket(AF_INET,SOCK_STREAM,0);
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close(s);
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int fd1 = open("a", O_RDWR | O_CREAT);
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close(fd1);
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int fd2 = open("a", O_RDWR | O_CREAT, S_IRUSR | S_IWUSR);
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close(fd2);
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/* TODO: add configuration for open/fdopen
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// #2830
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int fd = open("path", O_RDONLY);
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FILE *f = fdopen(fd, "rt");
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fclose(f);
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*/
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}
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// unused return value
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void ignoredReturnValue(void *addr, int fd)
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{
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// cppcheck-suppress ignoredReturnValue
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// cppcheck-suppress leakReturnValNotUsed
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mmap(addr, 255, PROT_NONE, MAP_PRIVATE, fd, 0);
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// cppcheck-suppress ignoredReturnValue
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getuid();
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// cppcheck-suppress ignoredReturnValue
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access("filename", 1);
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// no ignoredReturnValue shall be shown for
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setuid(42);
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}
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// valid range
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void invalidFunctionArg()
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{
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// cppcheck-suppress invalidFunctionArg
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// cppcheck-suppress usleepCalled
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usleep(-1);
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// cppcheck-suppress usleepCalled
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usleep(0);
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// cppcheck-suppress usleepCalled
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usleep(999999);
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// cppcheck-suppress invalidFunctionArg
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// cppcheck-suppress usleepCalled
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usleep(1000000);
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}
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void invalidFunctionArg_close(int fd)
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{
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if (fd < 0) {
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// cppcheck-suppress invalidFunctionArg
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(void)close(fd);
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}
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}
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void uninitvar(int fd)
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{
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int x1, x2, x3, x4;
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char buf[2];
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int decimal, sign;
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double d;
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void *p;
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pthread_mutex_t mutex, mutex1, mutex2, mutex3;
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// cppcheck-suppress uninitvar
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write(x1,"ab",2);
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// TODO cppcheck-suppress uninitvar
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write(fd,buf,2); // #6325
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// cppcheck-suppress uninitvar
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write(fd,"ab",x2);
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// cppcheck-suppress uninitvar
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write(fd,p,2);
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/* int regcomp(regex_t *restrict preg, const char *restrict pattern, int cflags); */
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regex_t reg;
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const char * pattern;
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int cflags1, cflags2;
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// cppcheck-suppress uninitvar
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regcomp(®, pattern, cflags1);
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pattern="";
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// cppcheck-suppress uninitvar
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regcomp(®, pattern, cflags2);
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regerror(0, ®, 0, 0);
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#ifndef __CYGWIN__
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// cppcheck-suppress uninitvar
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// cppcheck-suppress unreadVariable
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// cppcheck-suppress ecvtCalled
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char *buffer = ecvt(d, 11, &decimal, &sign);
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#endif
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// cppcheck-suppress gcvtCalled
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gcvt(3.141, 2, buf);
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char *filename1, *filename2;
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struct utimbuf *times;
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// cppcheck-suppress uninitvar
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// cppcheck-suppress utimeCalled
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utime(filename1, times);
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struct timeval times1[2];
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// cppcheck-suppress uninitvar
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// cppcheck-suppress utimeCalled
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utime(filename2, times1);
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// cppcheck-suppress unreadVariable
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// cppcheck-suppress uninitvar
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int access_ret = access("file", x3);
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// cppcheck-suppress ignoredReturnValue
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// cppcheck-suppress leakReturnValNotUsed
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// cppcheck-suppress uninitvar
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fdopen(x4, "rw");
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char *strtok_arg1;
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// cppcheck-suppress strtokCalled
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// cppcheck-suppress uninitvar
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strtok(strtok_arg1, ";");
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// cppcheck-suppress uninitvar
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pthread_mutex_lock(&mutex1);
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// cppcheck-suppress uninitvar
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(void)pthread_mutex_trylock(&mutex2);
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// cppcheck-suppress uninitvar
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pthread_mutex_unlock(&mutex3);
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// after initialization it must be OK to call lock, trylock and unlock for this mutex
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pthread_mutex_init(&mutex, NULL);
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pthread_mutex_lock(&mutex);
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(void)pthread_mutex_trylock(&mutex);
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pthread_mutex_unlock(&mutex);
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}
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void uninitvar_getcwd(void)
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{
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char *buf;
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size_t size;
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// cppcheck-suppress uninitvar
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(void)getcwd(buf,size);
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}
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void uninitvar_types(void)
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{
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// cppcheck-suppress unassignedVariable
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blkcnt_t b;
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// cppcheck-suppress uninitvar
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b + 1;
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struct dirent d;
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// TODO cppcheck-suppress uninitvar
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d.d_ino + 1;
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}
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void timet_h(struct timespec* ptp1)
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{
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clockid_t clk_id1, clk_id2, clk_id3;
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struct timespec* ptp;
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// cppcheck-suppress uninitvar
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clock_settime(CLOCK_REALTIME, ptp);
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// cppcheck-suppress uninitvar
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clock_settime(clk_id1, ptp);
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// cppcheck-suppress uninitvar
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clock_settime(clk_id2, ptp1);
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struct timespec tp;
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// TODO cppcheck-suppress uninitvar
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clock_settime(CLOCK_REALTIME, &tp); // #6577 - false negative
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// cppcheck-suppress uninitvar
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clock_settime(clk_id3, &tp);
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time_t clock = time(0);
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char buf[26];
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// cppcheck-suppress ctime_rCalled
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ctime_r(&clock, buf);
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}
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void dl(const char* libname, const char* func)
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{
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void* lib = dlopen(libname, RTLD_NOW);
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// cppcheck-suppress redundantInitialization
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// cppcheck-suppress resourceLeak
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lib = dlopen(libname, RTLD_LAZY);
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const char* funcname;
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// cppcheck-suppress uninitvar
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// cppcheck-suppress unreadVariable
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void* sym = dlsym(lib, funcname);
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// cppcheck-suppress ignoredReturnValue
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dlsym(lib, "foo");
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void* uninit;
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// cppcheck-suppress uninitvar
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dlclose(uninit);
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// cppcheck-suppress resourceLeak
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}
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void asctime_r_test(struct tm * tm, char * bufSizeUnknown)
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{
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struct tm tm_uninit_data;
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struct tm * tm_uninit_pointer;
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char bufSize5[5];
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char bufSize25[25];
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char bufSize26[26];
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char bufSize100[100];
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// cppcheck-suppress asctime_rCalled
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// cppcheck-suppress bufferAccessOutOfBounds
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asctime_r(tm, bufSize5);
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// cppcheck-suppress asctime_rCalled
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// cppcheck-suppress bufferAccessOutOfBounds
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asctime_r(tm, bufSize25);
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// cppcheck-suppress asctime_rCalled
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asctime_r(tm, bufSize26);
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// cppcheck-suppress asctime_rCalled
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asctime_r(tm, bufSize100);
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|
|
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// cppcheck-suppress asctime_rCalled
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// cppcheck-suppress uninitvar
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asctime_r(&tm_uninit_data, bufSize100);
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// cppcheck-suppress asctime_rCalled
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// cppcheck-suppress uninitvar
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asctime_r(tm_uninit_pointer, bufSize100);
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|
|
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// cppcheck-suppress asctime_rCalled
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asctime_r(tm, bufSizeUnknown);
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}
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|
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void ctime_r_test(time_t * timep, char * bufSizeUnknown)
|
|
{
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|
time_t time_t_uninit_data;
|
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time_t * time_t_uninit_pointer;
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char bufSize5[5];
|
|
char bufSize25[25];
|
|
char bufSize26[26];
|
|
char bufSize100[100];
|
|
|
|
// cppcheck-suppress ctime_rCalled
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// cppcheck-suppress bufferAccessOutOfBounds
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ctime_r(timep, bufSize5);
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|
// cppcheck-suppress ctime_rCalled
|
|
// cppcheck-suppress bufferAccessOutOfBounds
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|
ctime_r(timep, bufSize25);
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|
// cppcheck-suppress ctime_rCalled
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|
ctime_r(timep, bufSize26);
|
|
// cppcheck-suppress ctime_rCalled
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|
ctime_r(timep, bufSize100);
|
|
|
|
// cppcheck-suppress ctime_rCalled
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|
// cppcheck-suppress uninitvar
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|
ctime_r(&time_t_uninit_data, bufSize100);
|
|
// cppcheck-suppress ctime_rCalled
|
|
// cppcheck-suppress uninitvar
|
|
ctime_r(time_t_uninit_pointer, bufSize100);
|
|
|
|
// cppcheck-suppress ctime_rCalled
|
|
ctime_r(timep, bufSizeUnknown);
|
|
}
|