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Michael Wong 867eeb5861 Commit patch for PR19649. Set the correct sign of wide character for literals based on underlying type of wchar_t.

Reviewed:
http://reviews.llvm.org/D7559
Patch by Rachel Craig; Test cases by Hubert Tong.

llvm-svn: 230333

2015-02-24 13:34:20 +00:00

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 // RUN: %clang_cc1 -triple powerpc64-unknown-linux-gnu -E -x c %s
 // RUN: %clang_cc1 -triple powerpc64-unknown-linux-gnu -E -fno-signed-char -x c %s
 #if (L'\0' - 1 > 0)
 # error "Unexpected expression evaluation result"
 #endif