fix PR3927 by being more careful about the pp test for identifier.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69423 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Lex/PPMacroExpansion.cpp b/lib/Lex/PPMacroExpansion.cpp
index a682e86..7e695a5 100644
--- a/lib/Lex/PPMacroExpansion.cpp
+++ b/lib/Lex/PPMacroExpansion.cpp
@@ -335,7 +335,7 @@
// If this is a comment token in the argument list and we're just in
// -C mode (not -CC mode), discard the comment.
continue;
- } else if (Tok.is(tok::identifier)) {
+ } else if (Tok.getIdentifierInfo() != 0) {
// Reading macro arguments can cause macros that we are currently
// expanding from to be popped off the expansion stack. Doing so causes
// them to be reenabled for expansion. Here we record whether any