llvm-project/clang/test/Misc/backend-stack-frame-diagnos...

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C++

// REQUIRES: x86-registered-target
// RUN: %clang_cc1 %s -mllvm -warn-stack-size=0 -emit-codegen-only -triple=i386-apple-darwin 2>&1 | FileCheck %s
// TODO: Emit rich diagnostics for thunks and move this into the appropriate test file.
// Until then, test that we fall back and display the LLVM backend diagnostic.
namespace frameSizeThunkWarning {
struct A {
virtual void f();
};
struct B : virtual A {
virtual void f();
};
// CHECK: warning: stack frame size of {{[0-9]+}} bytes in function 'frameSizeThunkWarning::B::f'
// CHECK: warning: stack size limit exceeded ({{[0-9]+}}) in {{[^ ]+}}
void B::f() {
volatile int x = 0; // Ensure there is stack usage.
}
}