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| author | Jakub Jelinek <jakub@redhat.com> | 2017-12-05 14:33:52 +0100 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2017-12-05 14:33:52 +0100 |
| commit | 240cf3e5e1458271756997fe61a6c9ef2c85b84f (patch) | |
| tree | 90f94bd4f6123ac09828304fc1eeb0275e720064 | |
| parent | 1b6546cc4efb5687b62917c6a0d744b842a4945c (diff) | |
| download | gcc-240cf3e5e1458271756997fe61a6c9ef2c85b84f.zip gcc-240cf3e5e1458271756997fe61a6c9ef2c85b84f.tar.gz gcc-240cf3e5e1458271756997fe61a6c9ef2c85b84f.tar.bz2 | |
re PR tree-optimization/83283 (Casting from boolean to unsigned char to enum returns incorrect results)
PR tree-optimization/83283
* g++.dg/torture/pr83283.C: New test.
From-SVN: r255417
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/g++.dg/torture/pr83283.C | 26 |
2 files changed, 31 insertions, 0 deletions
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index b9b09d4..6a9ce85 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +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. diff --git a/gcc/testsuite/g++.dg/torture/pr83283.C b/gcc/testsuite/g++.dg/torture/pr83283.C new file mode 100644 index 0000000..62274a9 --- /dev/null +++ b/gcc/testsuite/g++.dg/torture/pr83283.C @@ -0,0 +1,26 @@ +// 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 (); +} |