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* [Bug middle-end/86284] Insert trap instruction in place of missing return statement on dodgy code [not found] <bug-86284-4@http.gcc.gnu.org/bugzilla/> @ 2021-07-24 9:57 ` pinskia at gcc dot gnu.org 2021-07-24 9:59 ` pinskia at gcc dot gnu.org 1 sibling, 0 replies; 2+ messages in thread From: pinskia at gcc dot gnu.org @ 2021-07-24 9:57 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86284 --- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> --- (In reply to Andrew Pinski from comment #3) > I thought it was defined unless the return value is actually used. To answer my own question: For C it is. For C++ it is not; it is undefined if there is no return value. ^ permalink raw reply [flat|nested] 2+ messages in thread
* [Bug middle-end/86284] Insert trap instruction in place of missing return statement on dodgy code [not found] <bug-86284-4@http.gcc.gnu.org/bugzilla/> 2021-07-24 9:57 ` [Bug middle-end/86284] Insert trap instruction in place of missing return statement on dodgy code pinskia at gcc dot gnu.org @ 2021-07-24 9:59 ` pinskia at gcc dot gnu.org 1 sibling, 0 replies; 2+ messages in thread From: pinskia at gcc dot gnu.org @ 2021-07-24 9:59 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86284 --- Comment #5 from Andrew Pinski <pinskia at gcc dot gnu.org> --- -fsanitize=unreachable will find the C++ cases right now. For C, it is a little harder because it is only undefined if the value is used. ^ permalink raw reply [flat|nested] 2+ messages in thread
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[not found] <bug-86284-4@http.gcc.gnu.org/bugzilla/>
2021-07-24 9:57 ` [Bug middle-end/86284] Insert trap instruction in place of missing return statement on dodgy code pinskia at gcc dot gnu.org
2021-07-24 9:59 ` pinskia at gcc dot gnu.org
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