Avoid dumping during semantic analysis when checking array types when

a vla is used.

llvm-svn: 72575

1 files changed, 16 insertions, 15 deletions

diff --git a/clang/lib/Sema/SemaInit.cpp b/clang/lib/Sema/SemaInit.cpp
index 5dc40a45934..6090b79c5c1 100644
--- a/clang/lib/Sema/SemaInit.cpp
+++ b/clang/lib/Sema/SemaInit.cpp
@@ -97,21 +97,22 @@ static void CheckStringInit(Expr *Str, QualType &DeclT, Sema &S) {
     return;
   }
   
-  const ConstantArrayType *CAT = cast<ConstantArrayType>(AT);
-  
-  // C99 6.7.8p14. We have an array of character type with known size.  However,
-  // the size may be smaller or larger than the string we are initializing.
-  // FIXME: Avoid truncation for 64-bit length strings.
-  if (StrLength-1 > CAT->getSize().getZExtValue())
-    S.Diag(Str->getSourceRange().getBegin(),
-           diag::warn_initializer_string_for_char_array_too_long)
-      << Str->getSourceRange();
-  
-  // Set the type to the actual size that we are initializing.  If we have
-  // something like:
-  //   char x[1] = "foo";
-  // then this will set the string literal's type to char[1].
-  Str->setType(DeclT);
+  if (const ConstantArrayType *CAT = dyn_cast<ConstantArrayType>(AT)) {
+    // C99 6.7.8p14. We have an array of character type with known size.
+    // However, the size may be smaller or larger than the string we are
+    // initializing.
+    // FIXME: Avoid truncation for 64-bit length strings.
+    if (StrLength-1 > CAT->getSize().getZExtValue())
+      S.Diag(Str->getSourceRange().getBegin(),
+             diag::warn_initializer_string_for_char_array_too_long)
+        << Str->getSourceRange();
+
+    // Set the type to the actual size that we are initializing.  If we have
+    // something like:
+    //   char x[1] = "foo";
+    // then this will set the string literal's type to char[1].
+    Str->setType(DeclT);
+  }
 }
 
 bool Sema::CheckInitializerTypes(Expr *&Init, QualType &DeclType,