[Logging] Mark LogFatal::~LogFatal as [[noreturn]] #13542
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Using `LOG(FATAL) << "some error message";` throws an exception when the internal `LogFatal` object is constructed. However, the gcc warning "control reaches end of non-void function" resulted in a common pattern where a `LOG(FATAL)` statement was immediately followed by return of a default value, in order to suppress the warning. This commit marks the `LogFatal::~LogFatal` destructor with the C++11 attribute `[[noreturn]]`, indicating that calls into it will not resume the normal control flow. This suppresses the warning without requiring the extra `return` statement after `LOG(FATAL)`, as the compiler knows that control flow will not resume after `LOG(FATAL)`.
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kparzysz-quic
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Dec 2, 2022
Hzfengsy
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Dec 4, 2022
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Using
LOG(FATAL) << "some error message";throws an exception when the internalLogFatalobject is constructed. However, the gcc warning "control reaches end of non-void function" resulted in a common pattern where aLOG(FATAL)statement was immediately followed by return of a default value, in order to suppress the warning.This commit marks the
LogFatal::~LogFataldestructor with the C++11 attribute[[noreturn]], indicating that calls into it will not resume the normal control flow. This suppresses the warning without requiring the extrareturnstatement afterLOG(FATAL), as the compiler knows that control flow will not resume afterLOG(FATAL).