Loop hint pragmas sometimes do not contain an identifier option (such as #pragma unroll(4)). Check explicitly that the token we stored was an identifier.

Amends r214432

llvm-svn: 214446

1 files changed, 5 insertions, 1 deletions

diff --git a/clang/lib/Parse/ParsePragma.cpp b/clang/lib/Parse/ParsePragma.cpp
index 106c02b362f..e0b8f8b4eae 100644
--- a/clang/lib/Parse/ParsePragma.cpp
+++ b/clang/lib/Parse/ParsePragma.cpp
@@ -733,7 +733,11 @@ bool Parser::HandlePragmaLoopHint(LoopHint &Hint) {
   Hint.PragmaNameLoc = IdentifierLoc::create(
       Actions.Context, Info->PragmaName.getLocation(), PragmaNameInfo);
 
-  IdentifierInfo *OptionInfo = Info->Option.getIdentifierInfo();
+  // It is possible that the loop hint has no option identifier, such as
+  // #pragma unroll(4).
+  IdentifierInfo *OptionInfo = Info->Option.is(tok::identifier)
+                                   ? Info->Option.getIdentifierInfo()
+                                   : nullptr;
   Hint.OptionLoc = IdentifierLoc::create(
       Actions.Context, Info->Option.getLocation(), OptionInfo);