Implement #pragma redefine_extname.
This fixes PR5172 and allows clang to compile C++ programs on Solaris using the system headers.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150881 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Frontend/InitPreprocessor.cpp b/lib/Frontend/InitPreprocessor.cpp
index f0cf7f4..504ef01 100644
--- a/lib/Frontend/InitPreprocessor.cpp
+++ b/lib/Frontend/InitPreprocessor.cpp
@@ -333,6 +333,9 @@
Builder.defineMacro("__ATOMIC_ACQ_REL", "4");
Builder.defineMacro("__ATOMIC_SEQ_CST", "5");
+ // Support for #pragma redefine_extname (Sun compatibility)
+ Builder.defineMacro("__PRAGMA_REDEFINE_EXTNAME", "1");
+
// As sad as it is, enough software depends on the __VERSION__ for version
// checks that it is necessary to report 4.2.1 (the base GCC version we claim
// compatibility with) first.