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/* { dg-do compile } */
/* { dg-options "-Wall -O3 -fdump-tree-vrp2" } */
#include <vector>
void foo(std::vector<unsigned int> &v);
void vtest()
{
std::vector<unsigned int> v;
foo (v);
{
v.resize (v.size()-1);
}
}
/* As written this testcase should trigger a warning. We overflow to -1U
if v.size() == 0 in foo(). This results in bogus calls to memset.
The number of clearing loops in the IL can vary depending on the C++
mode used for the test. But by the end of VRP2, there should be a single
clearing loop left and it should be using memcpy. */
/* { dg-final { scan-tree-dump-times "__builtin_memset \\(_\[0-9\]+, 0, \[0-9\]+\\)" 1 "vrp2" } } */
/* And that call should trigger a warning. */
/* { dg-warning "exceeds maximum object size" "" { target *-*-* } 0 } */
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