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From: "dcb314 at hotmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug analyzer/93388] ensure -fanalyzer works with our C code
Date: Fri, 14 Aug 2020 09:00:21 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D93388

--- Comment #18 from David Binderman <dcb314 at hotmail dot com> ---
(In reply to Arseny Solokha from comment #17)
> After the recent analyzer overhaul it's probably time to update this list
> once again.=20

Done.=20

$ cat 20200814.ana.O2.c.out | fgrep "internal c" | fgrep analyzer
./c-c++-common/vector-subscript-3.c:5:16: internal compiler error: in valid=
ate,
at analyzer/region-model.cc:243
./gcc.c-torture/compile/20010107-1.c:7:3: internal compiler error: in
get_or_create_mem_ref, at analyzer/region-model.cc:6932
./gcc.dg/pr70022.c:9:3: internal compiler error: in validate, at
analyzer/region-model.cc:243
./gcc.dg/pr78526.c:10:1: internal compiler error: in validate, at
analyzer/region-model.cc:243
./gcc.target/i386/addr-space-5.c:13:3: internal compiler error: in
get_or_create_mem_ref, at analyzer/region-model.cc:6932
./gcc.target/i386/pr79498.c:9:1: internal compiler error: in validate, at
analyzer/region-model.cc:243
$

So downto two crashes. I used flags -g -O2 -fanalyzer

> Maybe trying each optimization level in turn besides -O2 might
> also make sense.

Maybe. One thing at a time. Let's get popular flags like -g -O2 working fir=
st.

Then maybe -g -O3 then -g -O3 -march=3Dnative. Then when that's all working
we can try out -fanalyzer on the source code of gcc. Just some ideas.=