llvm-project/clang/test/CodeGenCXX/block-inalloca.cpp

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// RUN: %clang_cc1 -triple i686-unknown-windows-msvc -fblocks -emit-llvm -o - %s | FileCheck %s
struct S {
S(const struct S &) {}
};
void (^b)(S) = ^(S) {};
// CHECK: [[DESCRIPTOR:%.*]] = getelementptr inbounds <{ i8*, %struct.S, [3 x i8] }>, <{ i8*, %struct.S, [3 x i8] }>* %0, i32 0, i32 0
// CHECK: load i8*, i8** [[DESCRIPTOR]]