Fix crasher in ASTContext::getObjCEncodingForMethodDecl().

This was exposed as a result of something else that was recently fixed.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69004 91177308-0d34-0410-b5e6-96231b3b80d8

lib/AST/ASTContext.cpp

@@ -2081,11 +2081,13 @@ void ASTContext::getObjCEncodingForMethodDecl(const ObjCMethodDecl *Decl,
     ParmVarDecl *PVDecl = *PI;
     QualType PType = PVDecl->getOriginalType(); 
     if (const ArrayType *AT =
-          dyn_cast<ArrayType>(PType->getCanonicalTypeInternal())) 
-        // Use array's original type only if it has known number of
-        // elements.
-        if (!dyn_cast<ConstantArrayType>(AT))
-          PType = PVDecl->getType();
+          dyn_cast<ArrayType>(PType->getCanonicalTypeInternal())) {
+      // Use array's original type only if it has known number of
+      // elements.
+      if (!dyn_cast<ConstantArrayType>(AT))
+        PType = PVDecl->getType();
+    } else if (PType->isFunctionType())
+      PType = PVDecl->getType();
     // Process argument qualifiers for user supplied arguments; such as,
     // 'in', 'inout', etc.
     getObjCEncodingForTypeQualifier(PVDecl->getObjCDeclQualifier(), S);

test/CodeGen/function-decay.m

@@ -0,0 +1,10 @@
+// RUN: clang-cc %s -emit-llvm
+
+@interface I0 @end
+@implementation I0
+- (void) im0: (int (void)) a0 {
+}
+@end
+
+void func(int pf(void)) {
+}