http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50826
--- Comment #9 from Alexandre Oliva <aoliva at gcc dot gnu.org> 2011-10-26 13:32:57 UTC --- Nice, a testsuite run detected gcc.dg/torture/pr43165.c -Os -g on i686-linux-gnu gets a debug stmt referencing a user variable using a debug temp as the address. Sadly, that exposes a bug in the generation of debug temps within df-problems: we'd bind the temp to the previous value of bp, rather than to the one copied from sp as intended. Testing a fix now, but it ends up causing the potential problem trigger to no longer occur on any testcase on i686. OTOH, it might obviate the expensive-ish test in the proposed patch.
