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/* PR tree-optimization/84238 */
/* { dg-do compile } */
/* { dg-options "-O2" } */
/* { dg-require-effective-target alloca } */
char a[1];
int b;
char *strncpy (char *, char *, __SIZE_TYPE__);
void
c ()
{
char d[b];
strncpy (a, &d[3], 3); /* { dg-warning "writing 3 bytes into a region of size 1" } */
}
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