274 lines
5.4 KiB
C
274 lines
5.4 KiB
C
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// Test library configuration for std.cfg
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//
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// Usage:
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// $ cppcheck --check-library --enable=information --error-exitcode=1 --inline-suppr cfg/test/std.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 <stdio.h>
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#include <tgmath.h> // frexp
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void bufferAccessOutOf(void) {
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char a[5];
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fgets(a,5,stdin);
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// cppcheck-suppress bufferAccessOutOfBounds
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fgets(a,6,stdin);
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sprintf(a, "ab%s", "cd");
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// cppcheck-suppress bufferAccessOutOfBounds
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sprintf(a, "ab%s", "cde");
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snprintf(a, 5, "abcde%i", 1);
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// cppcheck-suppress bufferAccessOutOfBounds
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snprintf(a, 6, "abcde%i", 1);
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strcpy(a,"abcd");
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// cppcheck-suppress bufferAccessOutOfBounds
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strcpy(a, "abcde");
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strncpy(a,"abcde",5);
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// cppcheck-suppress bufferAccessOutOfBounds
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strncpy(a,"abcde",6);
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fread(a,1,5,stdin);
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// cppcheck-suppress bufferAccessOutOfBounds
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fread(a,1,6,stdin);
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fwrite(a,1,5,stdout);
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// cppcheck-suppress bufferAccessOutOfBounds
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fread(a,1,6,stdout);
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}
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// null pointer
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void nullpointer(int value){
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int res = 0;
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FILE *fp;
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// cppcheck-suppress nullPointer
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clearerr(0);
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// cppcheck-suppress nullPointer
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feof(0);
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// cppcheck-suppress nullPointer
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fgetc(0);
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// cppcheck-suppress nullPointer
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fclose(0);
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// cppcheck-suppress nullPointer
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ferror(0);
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// cppcheck-suppress nullPointer
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ftell(0);
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// cppcheck-suppress nullPointer
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puts(0);
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// cppcheck-suppress nullPointer
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fp=fopen(0,0);
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fclose(fp); fp = 0;
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// No FP
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fflush(0);
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// No FP
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fp = freopen(0,"abc",stdin);
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fclose(fp); fp = 0;
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// cppcheck-suppress nullPointer
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fputc(0,0);
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// cppcheck-suppress nullPointer
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fputs(0,0);
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// cppcheck-suppress nullPointer
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fgetpos(0,0);
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// cppcheck-suppress nullPointer
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frexp(1.0,0);
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// cppcheck-suppress nullPointer
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fsetpos(0,0);
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// cppcheck-suppress nullPointer
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itoa(123,0,10);
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putchar(0);
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// cppcheck-suppress nullPointer
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strchr(0,0);
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// cppcheck-suppress nullPointer
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strlen(0);
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// cppcheck-suppress nullPointer
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strcpy(0,0);
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// cppcheck-suppress nullPointer
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strspn(0,0);
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// cppcheck-suppress nullPointer
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strcspn(0,0);
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// cppcheck-suppress nullPointer
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strcoll(0,0);
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// cppcheck-suppress nullPointer
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strcat(0,0);
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// cppcheck-suppress nullPointer
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strcmp(0,0);
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// cppcheck-suppress nullPointer
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strncpy(0,0,1);
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// cppcheck-suppress nullPointer
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strncat(0,0,1);
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// cppcheck-suppress nullPointer
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strncmp(0,0,1);
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// cppcheck-suppress nullPointer
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strstr(0,0);
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// cppcheck-suppress nullPointer
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strtoul(0,0,0);
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// cppcheck-suppress nullPointer
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strtoull(0,0,0);
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// cppcheck-suppress nullPointer
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strtol(0,0,0);
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// #6100 False positive nullPointer - calling mbstowcs(NULL,)
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res += mbstowcs(0,value,0);
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res += wcstombs(0,value,0);
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strtok(NULL,"xyz");
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strxfrm(0,"foo",0);
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// TODO: error message
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strxfrm(0,"foo",42);
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}
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void nullpointerMemchr1(char *p, char *s) {
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p = memchr (s, 'p', strlen(s));
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}
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void nullpointerMemchr2(char *p, char *s) {
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p = memchr (s, 0, strlen(s));
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}
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void nullpointerMemchr3(char *p) {
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char *s = 0;
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// cppcheck-suppress nullPointer
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p = memchr (s, 0, strlen(s));
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}
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void nullpointerMemcmp(char *p) {
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// cppcheck-suppress nullPointer
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memcmp(p, 0, 123);
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}
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// uninit pointers
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void uninit_clearerr(void) {
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FILE *fp;
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// cppcheck-suppress uninitvar
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clearerr(fp);
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}
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void uninit_fclose(void) {
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FILE *fp;
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// cppcheck-suppress uninitvar
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fclose(fp);
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}
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void uninit_fopen(void) {
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const char *filename, *mode;
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FILE *fp;
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// cppcheck-suppress uninitvar
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fp = fopen(filename, "rt");
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fclose(fp);
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// cppcheck-suppress uninitvar
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fp = fopen("filename.txt", mode);
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fclose(fp);
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}
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void uninit_feof(void) {
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FILE *fp;
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// cppcheck-suppress uninitvar
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feof(fp);
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}
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void uninit_ferror(void) {
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FILE *fp;
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// cppcheck-suppress uninitvar
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ferror(fp);
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}
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void uninit_fflush(void) {
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FILE *fp;
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// cppcheck-suppress uninitvar
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fflush(fp);
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}
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void uninit_fgetc(void) {
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FILE *fp;
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// cppcheck-suppress uninitvar
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fgetc(fp);
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}
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void uninit_fgetpos(void) {
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FILE *fp;
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fpos_t pos;
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fpos_t *ppos;
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// cppcheck-suppress uninitvar
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fgetpos(fp,&pos);
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fp = fopen("filename","rt");
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// cppcheck-suppress uninitvar
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fgetpos(fp,ppos);
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fclose(fp);
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}
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void uninit_fsetpos(void) {
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FILE *fp;
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fpos_t pos;
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fpos_t *ppos;
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// cppcheck-suppress uninitvar
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fsetpos(fp,&pos);
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fp = fopen("filename","rt");
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// cppcheck-suppress uninitvar
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fsetpos(fp,ppos);
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fclose(fp);
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}
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void uninit_fgets(void) {
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FILE *fp;
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char buf[10];
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char *str;
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fgets(buf,10,stdin);
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// cppcheck-suppress uninitvar
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fgets(str,10,stdin);
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// cppcheck-suppress uninitvar
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fgets(buf,10,fp);
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}
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void uninit_fputc(void) {
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int i;
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FILE *fp;
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fputc('a', stdout);
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// cppcheck-suppress uninitvar
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fputc(i, stdout);
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// cppcheck-suppress uninitvar
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fputc('a', fp);
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}
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void uninit_fputs(void) {
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const char *s;
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FILE *fp;
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fputs("a", stdout);
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// cppcheck-suppress uninitvar
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fputs(s, stdout);
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// cppcheck-suppress uninitvar
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fputs("a", fp);
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}
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void uninit_ftell(void) {
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FILE *fp;
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// cppcheck-suppress uninitvar
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ftell(fp);
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}
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void uninit_puts(void) {
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const char *s;
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// cppcheck-suppress uninitvar
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puts(s);
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}
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void uninit_putchar(void) {
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char c;
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// cppcheck-suppress uninitvar
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putchar(c);
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}
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