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

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CodeGen: block capture shouldn't ICE When a lambda capture captures a __block in the same statement, the compiler asserts out because isCapturedBy assumes that an Expr can only be a BlockExpr, StmtExpr, or if it's a Stmt then all the statement's children are expressions. That's wrong, we need to visit all sub-statements even if they're not expressions to see if they also capture. Fix this issue by pulling out the isCapturedBy logic to use RecursiveASTVisitor. <rdar://problem/39926584> llvm-svn: 332801
2018-05-19 12:21:26 +08:00
// RUN: %clang_cc1 -x c++ -std=c++11 -fblocks -emit-llvm %s -o - | FileCheck %s
// CHECK: %struct.__block_byref_baz = type { i8*, %struct.__block_byref_baz*, i32, i32, i32 }
// CHECK: [[baz:%[0-9a-z_]*]] = alloca %struct.__block_byref_baz
// CHECK: [[bazref:%[0-9a-z_\.]*]] = getelementptr inbounds %struct.__block_byref_baz, %struct.__block_byref_baz* [[baz]], i32 0, i32 1
// CHECK: store %struct.__block_byref_baz* [[baz]], %struct.__block_byref_baz** [[bazref]]
// CHECK: [[disposable:%[0-9a-z_]*]] = bitcast %struct.__block_byref_baz* [[baz]] to i8*
// CHECK: call void @_Block_object_dispose(i8* [[disposable]]
int main() {
__block int baz = [&]() { return 0; }();
return 0;
}