Richard Biener <rguent...@suse.de> writes:
> PR tree-optimization/56982
> * builtins.def (BUILT_IN_LONGJMP): longjmp is not a leaf
> function.
> * gimplify.c (gimplify_call_expr): Notice special calls.
> (gimplify_modify_expr): Likewise.
> * tree-cfg.c (make_abnormal_goto_edges): Handle setjmp-like
> abnormal control flow receivers.
> (call_can_make_abnormal_goto): Handle cfun->calls_setjmp
> in the same way as cfun->has_nonlocal_labels.
> (gimple_purge_dead_abnormal_call_edges): Likewise.
> (stmt_starts_bb_p): Make setjmp-like abnormal control flow
> receivers start a basic-block.
This breaks libgo.
../../../gcc/libgo/runtime/proc.c: In function ‘runtime_mcall.constprop.7’:
../../../gcc/libgo/runtime/proc.c:419:13: error: ‘({anonymous})’ may be used
uninitialized in this function [-Werror=maybe-uninitialized]
getcontext(&gp->context);
^
Andreas.
--
Andreas Schwab, sch...@linux-m68k.org
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"And now for something completely different."
