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/* { dg-do compile } */
/* { dg-options "-O2 -fno-strict-overflow -fdump-tree-tailc-details" } */
void bar();
void foo(char *dst)
{
char *const end = dst;
do {
bar();
dst += 2;
} while (dst < end);
}
/* The loop only iterates once because pointer overflow always has undefined
semantics. As a result, call to bar becomes tail call. */
/* { dg-final { scan-tree-dump-times "Found tail call " 1 "tailc" } } */
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