Patch for handling C99 veriadic macros when using precompiled headers,
from Filipe Cabecinhas!
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@159446 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Lex/Preprocessor.cpp b/lib/Lex/Preprocessor.cpp
index 70be2cf..c699c4a 100644
--- a/lib/Lex/Preprocessor.cpp
+++ b/lib/Lex/Preprocessor.cpp
@@ -515,9 +515,19 @@
// If the information about this identifier is out of date, update it from
// the external source.
+ // We have to treat __VA_ARGS__ in a special way, since it gets
+ // serialized with isPoisoned = true, but our preprocessor may have
+ // unpoisoned it if we're defining a C99 macro.
if (II.isOutOfDate()) {
+ bool CurrentIsPoisoned = false;
+ if (&II == Ident__VA_ARGS__)
+ CurrentIsPoisoned = Ident__VA_ARGS__->isPoisoned();
+
ExternalSource->updateOutOfDateIdentifier(II);
Identifier.setKind(II.getTokenID());
+
+ if (&II == Ident__VA_ARGS__)
+ II.setIsPoisoned(CurrentIsPoisoned);
}
// If this identifier was poisoned, and if it was not produced from a macro