110 lines
2.9 KiB
C
110 lines
2.9 KiB
C
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// Test library configuration for gnu.cfg
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//
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// Usage:
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// $ cppcheck --check-library --library=gnu --enable=information --enable=style --error-exitcode=1 --suppress=missingIncludeSystem --inline-suppr test/cfg/gnu.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 <string.h>
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#include <stdlib.h>
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#include <stdint.h>
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#include <stdio.h>
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#ifndef __CYGWIN__
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#include <sys/epoll.h>
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#endif
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void valid_code(int argInt1)
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{
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if (__builtin_expect(argInt1, 0)) {}
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if (__builtin_expect_with_probability(argInt1 + 1, 2, 0.5)) {}
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}
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void ignoreleak(void)
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{
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char *p = (char *)malloc(10);
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__builtin_memset(&(p[0]), 0, 10);
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// TODO // cppcheck-suppress memleak
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}
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void memleak_asprintf(char **ptr, const char *fmt, const int arg)
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{
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// No warning is expected for
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if (-1 != asprintf(ptr,fmt,arg)) {
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free(ptr);
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}
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if (-1 != asprintf(ptr,fmt,arg)) {
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// TODO: Related to #8980 cppcheck-suppress memleak
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}
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}
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void uninitvar__builtin_memset(void)
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{
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void *s;
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int c;
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size_t n;
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// cppcheck-suppress uninitvar
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(void)__builtin_memset(s,c,n);
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}
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void bufferAccessOutOfBounds__builtin_memset(void)
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{
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uint8_t buf[42];
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// cppcheck-suppress bufferAccessOutOfBounds
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(void)__builtin_memset(buf,0,1000);
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}
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void bufferAccessOutOfBounds()
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{
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char buf[2] = "a";
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// This is valid
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sethostname(buf, 2);
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// cppcheck-suppress bufferAccessOutOfBounds
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sethostname(buf, 4);
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// Declaration necessary because there is no specific / portable header containing xcalloc.
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extern void *xcalloc(size_t nmemb, size_t size);
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char * pAlloc1 = xcalloc(2, 4);
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memset(pAlloc1, 0, 8);
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// cppcheck-suppress bufferAccessOutOfBounds
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memset(pAlloc1, 0, 9);
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free(pAlloc1);
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}
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void leakReturnValNotUsed()
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{
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// cppcheck-suppress unreadVariable
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char* ptr = (char*)strdupa("test");
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// cppcheck-suppress ignoredReturnValue
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strdupa("test");
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// cppcheck-suppress unreadVariable
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char* ptr2 = (char*)strndupa("test", 1);
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// cppcheck-suppress ignoredReturnValue
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strndupa("test", 1);
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// cppcheck-suppress ignoredReturnValue
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// cppcheck-suppress nullPointer
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strcasestr("test", NULL);
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// FIXME cppcheck-suppress knownConditionTrueFalse
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// cppcheck-suppress duplicateExpression
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if (42 == __builtin_expect(42, 0))
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return;
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}
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#ifndef __CYGWIN__
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int nullPointer_epoll_ctl(int epfd, int op, int fd, struct epoll_event *event)
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{
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// no warning is expected
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(void)epoll_ctl(epfd, op, fd, event);
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// No nullpointer warning is expected in case op is set to EPOLL_CTL_DEL
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// EPOLL_CTL_DEL
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// Remove (deregister) the target file descriptor fd from the
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// epoll instance referred to by epfd. The event is ignored and
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// can be NULL.
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return epoll_ctl(epfd, EPOLL_CTL_DEL, fd, NULL);
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}
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#endif
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