https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109559
Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|Unexpected |[12/13/14 Regression]
|-Wmaybe-uninitialized |Unexpected
|warning when inlining with |-Wmaybe-uninitialized
|system header |warning when inlining with
| |system header
Keywords| |diagnostic
Target Milestone|--- |12.3
--- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Started with r12-1992.
We have an inlining context containing locations for each call site along
the inlining stack: struct inlining_info. It has a stack of locations,
and a flag that says whether all of them come from a system header. If so,
we don't warn:
1548 if (!report_warning_p && diagnostic->m_iinfo.m_allsyslocs)
1549 /* Bail if the warning is not to be reported because all locations
1550 in the inlining stack (if there is one) are in system headers. */
1551 return false;
but in this test diagnostic->m_iinfo.m_allsyslocs is false because the inlining
causes that the outermost context is the un.cc file, which is not a system
header.
It looks like this is a failure to propagate the sysp flag when inlining a
function.
