add new test cases

Author: kadircet

clang/test/AST/static-compound-literals-crash.cpp

@@ -0,0 +1,17 @@
+// FIXME: These test cases currently crash during codegen, despite initializers
+// for CLEs being constant.
+// RUN: not --crash %clang_cc1 -verify -std=c++20 -emit-llvm %s
+// expected-no-diagnostics
+namespace case1 {
+struct RR { int&& r; };
+struct Z { RR* x; };
+constinit Z z = { (RR[1]){1} };
+}
+
+
+namespace case2 {
+struct RR { int r; };
+struct Z { int x; const RR* y; int z; };
+inline int f() { return 0; }
+Z z2 = { 10, (const RR[1]){__builtin_constant_p(z2.x)}, z2.y->r+f() };
+}

clang/test/AST/static-compound-literals-reeval.cpp

@@ -0,0 +1,9 @@
+// Test that we can successfully compile this code, especially under ASAN.
+// RUN: %clang_cc1 -emit-llvm -std=c++20 %s -o- | FileCheck %s
+struct RR { int r; };
+struct Z { int x; const RR* y; int z; };
+constinit Z z = { 10, (const RR[1]){__builtin_constant_p(z.x)}, z.y->r };
+// Check that we zero-initialize z.y->r.
+// CHECK: @.compoundliteral = internal constant [1 x %struct.RR] zeroinitializer
+// FIXME: Despite of z.y->r being 0, we evaluate z.z to 1.
+// CHECK: @z = global %struct.Z { i32 10, ptr @.compoundliteral, i32 1 }