Mercurial > hg > CbC > CbC_gcc
comparison gcc/testsuite/c-c++-common/Wrestrict-2.c @ 131:84e7813d76e9
gcc-8.2
| author | mir3636 |
|---|---|
| date | Thu, 25 Oct 2018 07:37:49 +0900 |
| parents | |
| children | 1830386684a0 |
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| 111:04ced10e8804 | 131:84e7813d76e9 |
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| 1 /* PR 35503 - Warn about restricted pointers | |
| 2 Test to exercise that -Wrestrict warnings are issued for memory and | |
| 3 sring functions when they are declared in system headers (i.e., not | |
| 4 just when they are explicitly declared in the source file.) | |
| 5 Also verify that the warnings are issued even for calls where the | |
| 6 source of the aliasing violation is in a different function than | |
| 7 the restricted call. | |
| 8 { dg-do compile } | |
| 9 { dg-options "-O2 -Wrestrict" } */ | |
| 10 | |
| 11 #include <string.h> | |
| 12 | |
| 13 static void wrap_memcpy (void *d, const void *s, size_t n) | |
| 14 { | |
| 15 memcpy (d, s, n); /* { dg-warning "accessing 2 bytes at offsets 0 and 1 overlaps 1 byte at offset 1" "memcpy" } */ | |
| 16 } | |
| 17 | |
| 18 void call_memcpy (char *d) | |
| 19 { | |
| 20 const void *s = d + 1; | |
| 21 wrap_memcpy (d, s, 2); | |
| 22 } | |
| 23 | |
| 24 | |
| 25 static void wrap_strcat (char *d, const char *s) | |
| 26 { | |
| 27 strcat (d, s); /* { dg-warning "source argument is the same as destination" "strcat" } */ | |
| 28 } | |
| 29 | |
| 30 void call_strcat (char *d) | |
| 31 { | |
| 32 const char *s = d; | |
| 33 wrap_strcat (d, s); | |
| 34 } | |
| 35 | |
| 36 | |
| 37 static void wrap_strcpy (char *d, const char *s) | |
| 38 { | |
| 39 strcpy (d, s); /* { dg-warning "source argument is the same as destination" "strcpy" } */ | |
| 40 } | |
| 41 | |
| 42 void call_strcpy (char *d) | |
| 43 { | |
| 44 const char *s = d; | |
| 45 wrap_strcpy (d, s); | |
| 46 } | |
| 47 | |
| 48 | |
| 49 static void wrap_strncat (char *d, const char *s, size_t n) | |
| 50 { | |
| 51 strncat (d, s, n); /* { dg-warning "source argument is the same as destination" "strncat" } */ | |
| 52 } | |
| 53 | |
| 54 void call_strncat (char *d, size_t n) | |
| 55 { | |
| 56 const char *s = d; | |
| 57 wrap_strncat (d, s, n); | |
| 58 } | |
| 59 | |
| 60 | |
| 61 static void wrap_strncpy (char *d, const char *s, size_t n) | |
| 62 { | |
| 63 strncpy (d, s, n); /* { dg-warning "source argument is the same as destination" "strncpy" } */ | |
| 64 } | |
| 65 | |
| 66 void call_strncpy (char *d, size_t n) | |
| 67 { | |
| 68 const char *s = d; | |
| 69 wrap_strncpy (d, s, n); | |
| 70 } |