From: Jakub Jelinek Date: Tue, 5 Dec 2017 13:33:52 +0000 (+0100) Subject: re PR tree-optimization/83283 (Casting from boolean to unsigned char to enum returns... X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=240cf3e5e1458271756997fe61a6c9ef2c85b84f;p=gcc.git 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 --- diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index b9b09d49415..6a9ce85fee5 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2017-12-05 Jakub Jelinek + + PR tree-optimization/83283 + * g++.dg/torture/pr83283.C: New test. + 2017-12-05 Ed Schonberg * 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 00000000000..62274a97978 --- /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(static_cast(b)); + } +} + +int +main () +{ + constexpr int items = 32; + E vals[items] = {X}; + vals[3] = Y; + foo (vals, items); + if (vals[3] != 1) + __builtin_abort (); +}