https://bugs.llvm.org/show_bug.cgi?id=41186
Bug ID: 41186
Summary: [ms] Clang returns trivial, but "non-POD" types
indirectly, unlike MSVC
Product: clang
Version: unspecified
Hardware: PC
OS: Windows NT
Status: NEW
Severity: enhancement
Priority: P
Component: LLVM Codegen
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected], [email protected],
[email protected]
Test case courtesy of Eli:
class DefaultedDefaultConstructor {
public:
bool hasValue;
bool value;
DefaultedDefaultConstructor() = default;
};
class NoDefaultConstructor {
public:
bool hasValue;
bool value;
};
DefaultedDefaultConstructor f(int x, int y);
bool g() { return f(5, 6).value; }
NoDefaultConstructor f2(int x, int y);
bool g2() { return f2(5, 6).value; }
MSVC generates the same code for g and g2, but clang returns
DefaultedDefaultConstructor indirectly.
I tested x86 and x64, and both are wrong, but we probably get it wrong for
arm64 and thumb as well.
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