r222694 - Force the correction of delayed typos in casts in non-C++ code.

[Kaelyn Takata]

Author: rikka
Date: Mon Nov 24 15:46:59 2014
New Revision: 222694

URL: http://llvm.org/viewvc/llvm-project?rev=222694&view=rev
Log:
Force the correction of delayed typos in casts in non-C++ code.

Fixes PR21656, which is fallout from r222551 caused by an untested/missed
code path.

Modified:
    cfe/trunk/lib/Sema/SemaExpr.cpp
    cfe/trunk/test/Sema/typo-correction.c

Modified: cfe/trunk/lib/Sema/SemaExpr.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Sema/SemaExpr.cpp?rev=222694&r1=222693&r2=222694&view=diff
==============================================================================
--- cfe/trunk/lib/Sema/SemaExpr.cpp (original)
+++ cfe/trunk/lib/Sema/SemaExpr.cpp Mon Nov 24 15:46:59 2014
@@ -5299,6 +5299,12 @@ Sema::ActOnCastExpr(Scope *S, SourceLoca
   if (getLangOpts().CPlusPlus) {
     // Check that there are no default arguments (C++ only).
     CheckExtraCXXDefaultArguments(D);
+  } else {
+    // Make sure any TypoExprs have been dealt with.
+    ExprResult Res = CorrectDelayedTyposInExpr(CastExpr);
+    if (!Res.isUsable())
+      return ExprError();
+    CastExpr = Res.get();
   }
 
   checkUnusedDeclAttributes(D);

Modified: cfe/trunk/test/Sema/typo-correction.c
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Sema/typo-correction.c?rev=222694&r1=222693&r2=222694&view=diff
==============================================================================
--- cfe/trunk/test/Sema/typo-correction.c (original)
+++ cfe/trunk/test/Sema/typo-correction.c Mon Nov 24 15:46:59 2014
@@ -4,3 +4,8 @@
 // than in C++ and may exhibit different behavior as a result.
 
 __typeof__(struct F*) var[invalid];  // expected-error-re {{use of undeclared identifier 'invalid'{{$}}}}
+
+void PR21656() {
+  float x;
+  x = (float)arst;  // expected-error-re {{use of undeclared identifier 'arst'{{$}}}}
+}