https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94767
Bug ID: 94767 Summary: (unsigned bitfield) + (int) operation results in int, not unsigned int. Product: gcc Version: 9.3.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: jh718.park at samsung dot com Target Milestone: --- For these variables below, unsigned m_schemeEnd : 26; unsigned m_userStart; m_userStart == m_schemeEnd + 1 this comparison emits a compiler warning as below. warning: comparison of integer expressions of different signedness: ‘unsigned int’ and ‘int’ [-Wsign-compare] This bug was found during WebKit gtk port build with gcc 9.3.0. Temporarily, this warning was removed by this patch, https://trac.webkit.org/changeset/260715/webkit like bool slashSlashNeeded = m_userStart == static_cast<unsigned>(m_schemeEnd + 1); but we think that this bug should be fixed in gcc.