http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60536
--- Comment #12 from Markus Trippelsdorf <trippels at gcc dot gnu.org> --- (In reply to Kostya Serebryany from comment #11) > > Sorry, but I don't have a google account and refuse to create one. > You can login to our bug tracker with any existing e-mail, > or you can contact us via address-saniti...@googlegroups.com > or you can file a bug using the llvm bug tracker OK, sorry. I didn't know that. (In reply to Kostya Serebryany from comment #10) > > ==10632==ERROR: AddressSanitizer: heap-use-after-free on address > > 0x60200001ec50 at pc 0x7f3e30645dbd bp 0x7fff6d3b2a60 sp 0x7fff6d3b2a38 > > READ of size 2 at 0x60200001ec50 thread T0 > > #0 0x7f3e30645dbc in setlocale > > So, sounds like a real use-after-free in firefox No. It's a bug in libqtcurve (a QT/GTK theme). When I switch to a different theme I hit the real Firefox bug that I was after: https://bugzilla.mozilla.org/show_bug.cgi?id=983995 What about the "allocating memory until the OOM killer hits" issue? Do you think this is an asan bug?