[llvm-bugs] [Bug 42597] New: Address space cast involving blocks missing from AST

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=42597

            Bug ID: 42597
           Summary: Address space cast involving blocks missing from AST
           Product: clang
           Version: unspecified
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: OpenCL
          Assignee: unassignedclangbugs at nondot.org
          Reporter: marco.antognini at arm.com
                CC: anastasia.stulova at arm.com, llvm-bugs at lists.llvm.org

typedef int (^block_ty)(void);
__global block_ty block0 = ^{ return 0; };


kernel void test(void) {
  int x = ((__local block_ty) block0)(); // FIXME The AS cast is missing from
the AST, plus Clang crashes.
}

The above crashes:

llvm/include/llvm/Support/Casting.h:105: static bool llvm::isa_impl_cl<To,
const From*>::doit(const From*) [with To = clang::ParmVarDecl; From =
clang::Decl]: Assertion `Val && "isa<> used on a null pointer"' failed.

The crash originated from clang::CodeGen::CodeGenFunction::EmitBlockCallExpr.

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