cppcheck/test/cfg/bsd.c

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// Test library configuration for bsd.cfg
//
// Usage:
// $ cppcheck --library=bsd --check-library --enable=information --error-exitcode=1 --suppress=missingIncludeSystem --inline-suppr test/cfg/bsd.c
// =>
// No warnings about bad library configuration, unmatched suppressions, etc. exitcode=0
//
#include <string.h>
#include <stdlib.h>
#include <stdint.h>
#include <sys/time.h>
// #9323, #9331
void verify_timercmp(struct timeval t)
{
(void)timercmp(&t, &t, <);
(void)timercmp(&t, &t, <=);
(void)timercmp(&t, &t, ==);
(void)timercmp(&t, &t, !=);
(void)timercmp(&t, &t, >=);
(void)timercmp(&t, &t, >);
}
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// False negative: #9346
void uninitvar_timercmp(struct timeval t)
{
struct timeval uninit;
(void)timercmp(&t, &uninit, <);
(void)timercmp(&uninit, &t, <=);
(void)timercmp(&uninit, &uninit, ==);
}
void nullPointer_timercmp(struct timeval t)
{
struct timeval *p=0;
// cppcheck-suppress nullPointer
(void)timercmp(&t, p, <);
// cppcheck-suppress nullPointer
(void)timercmp(p, &t, <=);
// cppcheck-suppress nullPointer
(void)timercmp(p, p, ==);
}
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// size_t strlcat(char *dst, const char *src, size_t size);
void uninitvar_strlcat(char *Ct, const char *S, size_t N)
{
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char *ct1, *ct2;
char *s1, *s2;
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size_t n1, n2;
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// cppcheck-suppress uninitvar
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(void)strlcat(ct1,s1,n1);
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// cppcheck-suppress uninitvar
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(void)strlcat(ct2,S,N);
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// cppcheck-suppress uninitvar
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(void)strlcat(Ct,s2,N);
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// cppcheck-suppress uninitvar
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(void)strlcat(Ct,S,n2);
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// no warning is expected for
(void)strlcat(Ct,S,N);
}
void bufferAccessOutOfBounds(void)
{
uint16_t uint16Buf[4];
// cppcheck-suppress bufferAccessOutOfBounds
arc4random_buf(uint16Buf, 9);
// valid
arc4random_buf(uint16Buf, 8);
}
void ignoredReturnValue(void)
{
// cppcheck-suppress ignoredReturnValue
arc4random();
// cppcheck-suppress ignoredReturnValue
arc4random_uniform(10);
}
void invalidFunctionArg()
{
// cppcheck-suppress invalidFunctionArg
(void) arc4random_uniform(1);
// valid
(void) arc4random_uniform(2);
}
void nullPointer(void)
{
// cppcheck-suppress nullPointer
arc4random_buf(NULL, 5);
}
void uninitvar(void)
{
uint32_t uint32Uninit;
// cppcheck-suppress uninitvar
(void) arc4random_uniform(uint32Uninit);
}