On Fri, Sep 2, 2011 at 9:40 AM, Eric Botcazou <ebotca...@adacore.com> wrote: >> so accessing the With_Flags array (which is not empty) yields a SEGV >> because the base pointer is equal to Last_Unit (i.e. 2). In other words, >> the GIMPLE code looks legitimate and the bug is very likely in the stack >> slot allocation code (maybe triggered by the newly created zero-sized >> arrays). > > And this is the real fix. Richard, do you want me to apply (part of it)? > > > * cfgexpand.c (add_stack_var): Assert that the alignment is not zero. > * tree-ssa-ccp.c (fold_builtin_alloca_for_var): Force BITS_PER_UNIT > alignment at least on the new variable. >
Will this also fix: http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50251 Thanks. -- H.J.
