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/* { dg-do compile } */
/* { dg-additional-options "-Wno-stringop-overflow" } */
/* The loop below writes past the end of the global object a.
When the loop is transformed into a call to memcpy the buffer
overflow is detected and diagnosed by the -Wstringop-overflow
option enabled by default. */
typedef unsigned size_t;
struct {
unsigned char buf[sizeof(long)];
} a;
size_t b;
int main()
{
size_t c, i;
unsigned char *d;
for (; c < sizeof(long);)
{
d = a.buf;
b = 0;
for (; b < i; b++)
*d++ = '\0';
for (; c < b; c++)
*d++ = 'a';
c = 0;
for (; i < sizeof(long); i++)
;
}
}
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