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author | Ben Cheng <bccheng@google.com> | 2013-03-28 11:14:20 -0700 |
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committer | Ben Cheng <bccheng@google.com> | 2013-03-28 12:40:33 -0700 |
commit | af0c51ac87ab2a87caa03fa108f0d164987a2764 (patch) | |
tree | 4b8b470f7c5b69642fdab8d0aa1fbc148d02196b /gcc-4.8/gcc/testsuite/g++.dg/init/new17.C | |
parent | d87cae247d39ebf4f5a6bf25c932a14d2fdb9384 (diff) | |
download | toolchain_gcc-af0c51ac87ab2a87caa03fa108f0d164987a2764.tar.gz toolchain_gcc-af0c51ac87ab2a87caa03fa108f0d164987a2764.tar.bz2 toolchain_gcc-af0c51ac87ab2a87caa03fa108f0d164987a2764.zip |
[GCC 4.8] Initial check-in of GCC 4.8.0
Change-Id: I0719d8a6d0f69b367a6ab6f10eb75622dbf12771
Diffstat (limited to 'gcc-4.8/gcc/testsuite/g++.dg/init/new17.C')
-rw-r--r-- | gcc-4.8/gcc/testsuite/g++.dg/init/new17.C | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/gcc-4.8/gcc/testsuite/g++.dg/init/new17.C b/gcc-4.8/gcc/testsuite/g++.dg/init/new17.C new file mode 100644 index 000000000..42b9f077a --- /dev/null +++ b/gcc-4.8/gcc/testsuite/g++.dg/init/new17.C @@ -0,0 +1,37 @@ +// { dg-do compile } +// { dg-options "-O2 -fstrict-aliasing -fdump-tree-optimized" } + +// Test that placement new does not introduce an unnecessary memory +// barrier. +// See PR 29286. + +typedef __SIZE_TYPE__ size_t; + +inline void* operator new(size_t, void* __p) throw() { return __p; } + +template <class T, int D> +class Vector +{ +public: + Vector() + { + for (int i = 0; i < D; ++i) + new (&x_m[i]) T(); + } + T& operator[](int i) { return x_m[i]; } + +private: + T x_m[D]; +}; + +void foo(Vector<float, 3> *m) +{ + Vector<float, 3> v; + v[0] = 1.0; + v[1] = 2.0; + v[3] = 3.0; + *m = v; +} + +// { dg-final { scan-tree-dump-times "= 0\.0" 1 "optimized" } } +// { dg-final { cleanup-tree-dump "optimized" } } |