Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/c-c++-common/Wrestrict-2.c @ 131:84e7813d76e9
gcc-8.2
author | mir3636 |
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date | Thu, 25 Oct 2018 07:37:49 +0900 |
parents | |
children | 1830386684a0 |
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/* PR 35503 - Warn about restricted pointers Test to exercise that -Wrestrict warnings are issued for memory and sring functions when they are declared in system headers (i.e., not just when they are explicitly declared in the source file.) Also verify that the warnings are issued even for calls where the source of the aliasing violation is in a different function than the restricted call. { dg-do compile } { dg-options "-O2 -Wrestrict" } */ #include <string.h> static void wrap_memcpy (void *d, const void *s, size_t n) { memcpy (d, s, n); /* { dg-warning "accessing 2 bytes at offsets 0 and 1 overlaps 1 byte at offset 1" "memcpy" } */ } void call_memcpy (char *d) { const void *s = d + 1; wrap_memcpy (d, s, 2); } static void wrap_strcat (char *d, const char *s) { strcat (d, s); /* { dg-warning "source argument is the same as destination" "strcat" } */ } void call_strcat (char *d) { const char *s = d; wrap_strcat (d, s); } static void wrap_strcpy (char *d, const char *s) { strcpy (d, s); /* { dg-warning "source argument is the same as destination" "strcpy" } */ } void call_strcpy (char *d) { const char *s = d; wrap_strcpy (d, s); } static void wrap_strncat (char *d, const char *s, size_t n) { strncat (d, s, n); /* { dg-warning "source argument is the same as destination" "strncat" } */ } void call_strncat (char *d, size_t n) { const char *s = d; wrap_strncat (d, s, n); } static void wrap_strncpy (char *d, const char *s, size_t n) { strncpy (d, s, n); /* { dg-warning "source argument is the same as destination" "strncpy" } */ } void call_strncpy (char *d, size_t n) { const char *s = d; wrap_strncpy (d, s, n); }