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strerror_r requires non-null buffer pointer

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Fixes -Wnonnull warnings when calling message with a nullptr buffer
This commit is contained in:
Mohammad Nejati
2024-06-02 10:31:24 +00:00
parent 8a92683012
commit 4d4f906548
1 changed files with 6 additions and 1 deletions
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7
include/boost/system/detail/generic_category_message.hpp
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@ -39,7 +39,12 @@ inline char const * strerror_r_helper( int r, char const * buffer ) noexcept
inline char const * generic_error_category_message( int ev, char * buffer, std::size_t len ) noexcept inline char const * generic_error_category_message( int ev, char * buffer, std::size_t len ) noexcept
{ {
return strerror_r_helper( strerror_r( ev, buffer, len ), buffer ); if ( buffer != nullptr )
return strerror_r_helper( strerror_r( ev, buffer, len ), buffer );
// strerror_r requires non-null buffer pointer
char dummy_buffer[ 1 ];
return strerror_r_helper( strerror_r( ev, dummy_buffer, 0 ), buffer );
} }
inline std::string generic_error_category_message( int ev ) inline std::string generic_error_category_message( int ev )