Mercurial > hg > CbC > CbC_gcc
diff gcc/testsuite/gcc.dg/Wrestrict-5.c @ 131:84e7813d76e9
gcc-8.2
author | mir3636 |
---|---|
date | Thu, 25 Oct 2018 07:37:49 +0900 |
parents | |
children | 1830386684a0 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/gcc/testsuite/gcc.dg/Wrestrict-5.c Thu Oct 25 07:37:49 2018 +0900 @@ -0,0 +1,43 @@ +/* Test to verify that valid calls to common restrict-qualified built-in + functions declared with no prototype are checked for overlap, and that + invalid calls are ignored. + { dg-do compile } + { dg-options "-O2 -Wrestrict" } */ + +typedef __SIZE_TYPE__ size_t; + +#if __cplusplus +extern "C" { + +#define NO_PROTO ... +#else +#define NO_PROTO /* empty */ +#endif + +void* memcpy (); +char* strncpy (); + +#if __cplusplus +} /* extern "C" */ +#endif + +void test_memcpy_warn (char *d) +{ + memcpy (d, d + 2, 3); /* { dg-warning "accessing 3 bytes at offsets 0 and 2 overlaps 1 byte at offset 2" } */ +} + +void test_memcpy_nowarn (char *d) +{ + memcpy (d, d + 2, ""); +} + + +void test_strncpy_warn (char *d) +{ + strncpy (d + 1, d + 3, 5); /* { dg-warning "accessing 5 bytes at offsets 1 and 3 overlaps 2 bytes at offset 3" } */ +} + +void test_strncpy_nowarn (char *d) +{ + strncpy (d + 1, d + 3, ""); +}