mem sharing fix [Re: Your flow.c change on 4/8]

Franz Sirl
Wed Apr 12 17:51:00 GMT 2000

Am Thu, 13 Apr 2000 schrieb Richard Henderson:
>> /usr/src/redhat/BUILD/gcc/gcc/except.c: In function `init_insn_eh_region':
>> /usr/src/redhat/BUILD/gcc/gcc/except.c:3171: Internal compiler error in
>> `verify_wide_reg_1', at flow.c:2626
>Arg.  I had Kaz' autoinc patch in my tree, which has the bug that
>it doesn't check for a hard reg before it tests for an eliminable
>register.  Which means that autoinc never does anything at all.
>Reverting that, I reproduce the bug in the original small test
>and the except.i test.
>Here's a fix.  Jeff apparently had a similar problem while doing
>PA64 development.  I have no idea how this is suddenly triggered.
>Mon Sep 13 00:32:43 1999  Jeffrey A Law  (
>        * function.c (purge_addressof): Unshare any shared rtl created by
>        purge_addressof and its children.

Sorry, this doesn't solve the bootstrap fail on powerpc-linux-gnu. The testcase
I just posted still segfaults too. I'll continue to look into it tomorrow,
unless somebody else beats me :-).


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