Fix null pointers passed to memcmp detected by UBSan

AmokHuginnsson / replxx

A readline and libedit replacement that supports UTF-8, syntax highlighting, hints and Windows and is BSD licensed.

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Closed Naios closed 3 years ago

Naios commented 3 years ago

/replxx/src/utf8string.hxx:71:49: runtime error: null pointer passed as argument 1, which is declared to never be null /usr/include/string.h:65:33: note: nonnull attribute specified here -0 0x7f66c06fe59d in replxx::Utf8String::operator!=(replxx::Utf8String const&) -1 0x7f66c06e8ce8 in replxx::Replxx::ReplxxImpl::handle_hints(replxx::Replxx::ReplxxImpl::HINT_ACTION) -2 0x7f66c06dfb93 in replxx::Replxx::ReplxxImpl::refresh_line(replxx::Replxx::ReplxxImpl::HINT_ACTION)

AmokHuginnsson commented 3 years ago

Hello. Thank you for this contribution. I have cleaned up your fix and a commit message and merged it.