Treat the Microsoft/Borland keyword "__except" as a context-sensitive

keyword, because both libstdc++ and libc++ use "__except" as an
identifier. Fixes <rdar://problem/10322555>.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@142636 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 17 insertions, 3 deletions

diff --git a/lib/Parse/ParseStmt.cpp b/lib/Parse/ParseStmt.cpp
index 3df761af44..8968a43480 100644
--- a/lib/Parse/ParseStmt.cpp
+++ b/lib/Parse/ParseStmt.cpp
@@ -355,7 +355,8 @@ StmtResult Parser::ParseSEHTryBlockCommon(SourceLocation TryLoc) {
     return move(TryBlock);
 
   StmtResult Handler;
-  if(Tok.is(tok::kw___except)) {
+  if (Tok.is(tok::identifier) && 
+      Tok.getIdentifierInfo() == getSEHExceptKeyword()) {
     SourceLocation Loc = ConsumeToken();
     Handler = ParseSEHExceptBlock(Loc);
   } else if (Tok.is(tok::kw___finally)) {
@@ -2037,10 +2038,13 @@ StmtResult Parser::ParseCXXTryBlockCommon(SourceLocation TryLoc) {
     return move(TryBlock);
 
   // Borland allows SEH-handlers with 'try'
-  if(Tok.is(tok::kw___except) || Tok.is(tok::kw___finally)) {
+  
+  if((Tok.is(tok::identifier) && 
+      Tok.getIdentifierInfo() == getSEHExceptKeyword()) || 
+     Tok.is(tok::kw___finally)) {
     // TODO: Factor into common return ParseSEHHandlerCommon(...)
     StmtResult Handler;
-    if(Tok.is(tok::kw___except)) {
+    if(Tok.getIdentifierInfo() == getSEHExceptKeyword()) {
       SourceLocation Loc = ConsumeToken();
       Handler = ParseSEHExceptBlock(Loc);
     }
diff --git a/lib/Parse/Parser.cpp b/lib/Parse/Parser.cpp
index 2e0c46dbdb..2face304c0 100644
--- a/lib/Parse/Parser.cpp
+++ b/lib/Parse/Parser.cpp
@@ -23,6 +23,14 @@
 #include "clang/AST/ASTConsumer.h"
 using namespace clang;
 
+IdentifierInfo *Parser::getSEHExceptKeyword() {
+  // __except is accepted as a (contextual) keyword 
+  if (!Ident__except && (getLang().MicrosoftExt || getLang().Borland))
+    Ident__except = PP.getIdentifierInfo("__except");
+
+  return Ident__except;
+}
+
 Parser::Parser(Preprocessor &pp, Sema &actions)
   : PP(pp), Actions(actions), Diags(PP.getDiagnostics()),
     GreaterThanIsOperator(true), ColonIsSacred(false), 
@@ -431,6 +439,8 @@ void Parser::Initialize() {
   Ident_obsoleted = 0;
   Ident_unavailable = 0;
 
+  Ident__except = 0;
+  
   Ident__exception_code = Ident__exception_info = Ident__abnormal_termination = 0;
   Ident___exception_code = Ident___exception_info = Ident___abnormal_termination = 0;
   Ident_GetExceptionCode = Ident_GetExceptionInfo = Ident_AbnormalTermination = 0;