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re PR tree-optimization/83283 (Casting from boolean to unsigned char to enum returns incorrect results)

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PR tree-optimization/83283
	* g++.dg/torture/pr83283.C: New test.

From-SVN: r255417
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Jakub Jelinek 2017-12-05 14:33:52 +01:00 committed by Jakub Jelinek
parent 1b6546cc4e
commit 240cf3e5e1
2 changed files with 31 additions and 0 deletions
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gcc/testsuite/ChangeLog
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2017-12-05 Jakub Jelinek <jakub@redhat.com>
PR tree-optimization/83283
* g++.dg/torture/pr83283.C: New test.
2017-12-05 Ed Schonberg <schonberg@adacore.com>
* gnat.dg/private_overriding.adb: New testcase.

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gcc/testsuite/g++.dg/torture/pr83283.C Normal file
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// PR tree-optimization/83283
// { dg-do run }
// { dg-additional-options "-std=c++11" }
enum E : unsigned char { X = 0, Y = 1 };
void __attribute__((noinline))
foo (E *v, int size)
{
for (int i = 0; i < size; ++i)
{
const bool b = (v[i] == E::Y);
v[i] = static_cast<E>(static_cast<unsigned char>(b));
}
}
int
main ()
{
constexpr int items = 32;
E vals[items] = {X};
vals[3] = Y;
foo (vals, items);
if (vals[3] != 1)
__builtin_abort ();
}