[PATCH] D19623: [libc++] Initialize local doubles to 0.0.

[Richard Smith via cfe-commits]

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I don't know how the libc++ folks feel about this, but our usual policy in Clang and LLVM is that we don't add bogus initializers to shut up incorrect "maybe used uninitialized" compiler warnings, because these initializers prevent tools like MSan and valgrind from catching the bug if the variable ever is actually used uninitialized. For this reason, we turn off the portion of GCC's -Wuninitialized warning that has false positives too.


http://reviews.llvm.org/D19623