[OPENMP] Fix for http://llvm.org/PR24430: clang hangs on invalid input with openmp directive

Add parsing of openmp directives inside structs/unions in C mode.

llvm-svn: 244719

1 files changed, 8 insertions, 0 deletions

diff --git a/clang/lib/Parse/ParseDecl.cpp b/clang/lib/Parse/ParseDecl.cpp
index 40687d8f27b..debbd50d668 100644
--- a/clang/lib/Parse/ParseDecl.cpp
+++ b/clang/lib/Parse/ParseDecl.cpp
@@ -3615,6 +3615,14 @@ void Parser::ParseStructUnionBody(SourceLocation RecordLoc,
       continue;
     }
 
+    if (Tok.is(tok::annot_pragma_openmp)) {
+      // Result can be ignored, because it must be always empty.
+      auto Res = ParseOpenMPDeclarativeDirective();
+      assert(!Res);
+      // Silence possible warnings.
+      (void)Res;
+      continue;
+    }
     if (!Tok.is(tok::at)) {
       auto CFieldCallback = [&](ParsingFieldDeclarator &FD) {
         // Install the declarator into the current TagDecl.