Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/gcc.dg/pr79223.c @ 111:04ced10e8804
gcc 7
author | kono |
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date | Fri, 27 Oct 2017 22:46:09 +0900 |
parents | |
children | 84e7813d76e9 |
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/* PR middle-end/79223 - missing -Wstringop-overflow on a memmove overflow { dg-do compile } { dg-additional-options "-O2 -Wall -std=gnu99" } */ typedef __SIZE_TYPE__ size_t; extern void* memcpy (void*, const void*, size_t); extern void* mempcpy (void*, const void*, size_t); extern void* memmove (void*, const void*, size_t); char d[3]; char s[4]; size_t range (void) { extern size_t size (); size_t n = size (); if (n <= sizeof d) return sizeof d + 1; return n; } void test_memcpy (void) { memcpy (d, s, range ()); /* { dg-warning ".memcpy. writing 4 or more bytes into a region of size 3 overflows the destination" } */ } void test_mempcpy (void) { mempcpy (d, s, range ()); /* { dg-warning ".mempcpy. writing 4 or more bytes into a region of size 3 overflows the destination" } */ } void test_memmove (void) { memmove (d + 1, d, range ()); /* { dg-warning ".memmove. writing 4 or more bytes into a region of size 2 overflows the destination" } */ }