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-rw-r--r--clang/lib/Parse/ParseDecl.cpp3
1 files changed, 3 insertions, 0 deletions
diff --git a/clang/lib/Parse/ParseDecl.cpp b/clang/lib/Parse/ParseDecl.cpp
index 6c3b6d6e62a..c4c5045d2fe 100644
--- a/clang/lib/Parse/ParseDecl.cpp
+++ b/clang/lib/Parse/ParseDecl.cpp
@@ -3777,6 +3777,9 @@ void Parser::ParseDeclarationSpecifiers(DeclSpec &DS,
break;
case tok::kw_bool:
case tok::kw__Bool:
+ if (Tok.is(tok::kw__Bool) && !getLangOpts().C99)
+ Diag(Tok, diag::ext_c99_feature) << Tok.getName();
+
if (Tok.is(tok::kw_bool) &&
DS.getTypeSpecType() != DeclSpec::TST_unspecified &&
DS.getStorageClassSpec() == DeclSpec::SCS_typedef) {
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