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

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C++

// REQUIRES: x86-registered-target
// RUN: %clang_cc1 %s -fwarn-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 ([[#]]) exceeds limit ([[#]]) in 'frameSizeThunkWarning::B::f()'
// CHECK: warning: stack frame size ([[#]]) exceeds limit ([[#]]) in function '_ZTv0_n12_N21frameSizeThunkWarning1B1fEv'
void B::f() {
volatile int x = 0; // Ensure there is stack usage.
}
}