https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97268
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |11.0
Status|WAITING |NEW
Summary|Segfault on 11.0.0 20200930 |11 Regression] Segfault on
| |11.0.0 20200930
CC| |msebor at gcc dot gnu.org
--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
OK, confirmed. It's -Wextra that triggers the following for me:
during GIMPLE pass: *early_warn_uninitialized
t.C: In constructor 'BetterObject<CACHED>::BetterObject(const char*, int,
Handle&) [with bool CACHED = true]':
t.C:63:1: internal compiler error: in gimple_call_arg, at gimple.h:3256
63 | }
| ^
0x1a61d17 gimple_call_arg
/home/rguenther/src/gcc3/gcc/gimple.h:3256
0x1a61d6d gimple_call_arg
/home/rguenther/src/gcc3/gcc/gimple.h:3264
0x1a63c4d maybe_warn_pass_by_reference
/home/rguenther/src/gcc3/gcc/tree-ssa-uninit.c:526
0x1a6434d warn_uninitialized_vars
/home/rguenther/src/gcc3/gcc/tree-ssa-uninit.c:643
0x1a693d9 execute_early_warn_uninitialized
/home/rguenther/src/gcc3/gcc/tree-ssa-uninit.c:3018
0x1a6944c execute
/home/rguenther/src/gcc3/gcc/tree-ssa-uninit.c:3053
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
where on a stmt
Object<true>::Object (_2, _3);
we try to access argument 3. Not sure how readwrite attributes ended up there,
I see them on some libstdc++ functions only. Maybe some bad sharing
of function type trees?
CCing Martin.
