From: Daniel Dunbar <daniel@zuster.org>
Date: Wed, 20 Jan 2010 06:09:53 +0000 (+0000)
Subject: Fix an invalid Twine use spotty by abbeyj, it isn't safe to use Twine
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=066515feea9af5319c138ff4db99081c7686c5b1;p=clang

Fix an invalid Twine use spotty by abbeyj, it isn't safe to use Twine
temporaries (this is one reason I'm nervous about propagating their use beyond
particularly performance critical places).

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@93981 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Frontend/InitPreprocessor.cpp b/lib/Frontend/InitPreprocessor.cpp
index e4c380ae0e..f2eb4e642b 100644
--- a/lib/Frontend/InitPreprocessor.cpp
+++ b/lib/Frontend/InitPreprocessor.cpp
@@ -137,7 +137,10 @@ static void DefineFloatMacros(MacroBuilder &Builder, llvm::StringRef Prefix,
                "1.79769313486231580793728971405301e+308L",
                "1.18973149535723176508575932662800702e+4932L");
 
-  llvm::Twine DefPrefix = "__" + Prefix + "_";
+  llvm::SmallString<32> DefPrefix;
+  DefPrefix = "__";
+  DefPrefix += Prefix;
+  DefPrefix += "_";
 
   Builder.defineMacro(DefPrefix + "DENORM_MIN__", DenormMin);
   Builder.defineMacro(DefPrefix + "HAS_DENORM__");