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| author | Ben Cheng <bccheng@google.com> | 2014-03-25 22:37:19 -0700 |
|---|---|---|
| committer | Ben Cheng <bccheng@google.com> | 2014-03-25 22:37:19 -0700 |
| commit | 1bc5aee63eb72b341f506ad058502cd0361f0d10 (patch) | |
| tree | c607e8252f3405424ff15bc2d00aa38dadbb2518 /gcc-4.9/gcc/testsuite/g++.dg/cpp0x/constexpr-union.C | |
| parent | 283a0bf58fcf333c58a2a92c3ebbc41fb9eb1fdb (diff) | |
| download | toolchain_gcc-1bc5aee63eb72b341f506ad058502cd0361f0d10.tar.gz toolchain_gcc-1bc5aee63eb72b341f506ad058502cd0361f0d10.tar.bz2 toolchain_gcc-1bc5aee63eb72b341f506ad058502cd0361f0d10.zip | |
Initial checkin of GCC 4.9.0 from trunk (r208799).
Change-Id: I48a3c08bb98542aa215912a75f03c0890e497dba
Diffstat (limited to 'gcc-4.9/gcc/testsuite/g++.dg/cpp0x/constexpr-union.C')
| -rw-r--r-- | gcc-4.9/gcc/testsuite/g++.dg/cpp0x/constexpr-union.C | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/testsuite/g++.dg/cpp0x/constexpr-union.C b/gcc-4.9/gcc/testsuite/g++.dg/cpp0x/constexpr-union.C new file mode 100644 index 000000000..0c3548c0a --- /dev/null +++ b/gcc-4.9/gcc/testsuite/g++.dg/cpp0x/constexpr-union.C @@ -0,0 +1,16 @@ +// Test that we don't have to deal with type punning +// DR 1188 says this is ill-formed +// { dg-do compile { target c++11 } } + +union U +{ + float f; + unsigned char ca[sizeof(float)]; +}; + +constexpr U u = { 1.0 }; +constexpr float f = u.f; +constexpr unsigned char c = u.ca[0]; // { dg-error "U::ca" } + +constexpr double d = 1.0; +constexpr unsigned char c2 = (unsigned char&)d; // { dg-error "char. glvalue" } |