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* optimization/7782: [3.3 regression] C++ compiler internal error in delete_insn, at cfgrtl.c:139
@ 2002-12-11 9:16 Wolfgang Bangerth
0 siblings, 0 replies; 2+ messages in thread
From: Wolfgang Bangerth @ 2002-12-11 9:16 UTC (permalink / raw)
To: nobody; +Cc: gcc-prs
The following reply was made to PR optimization/7782; it has been noted by GNATS.
From: Wolfgang Bangerth <bangerth@ticam.utexas.edu>
To: gcc-gnats@gcc.gnu.org
Cc:
Subject: optimization/7782: [3.3 regression] C++ compiler internal error in
delete_insn, at cfgrtl.c:139
Date: Wed, 11 Dec 2002 11:09:57 -0600 (CST)
OK, here's the first result of the "regression tracking special team"
(Craig, Janis, me, maybe Volker):
The cause for PR 7782 is this patch:
> 2002-01-10 Richard Henderson <rth@redhat.com>
>
> * cfgrtl.c (delete_insn): Assert insn hasn't been deleted yet.
> * reload1.c (delete_output_reload): Zap spill_reg_store. Take
> care not to delete instructions twice.
Here's a testcase:
-----------------
// g++ -O -c PR7782.cc
struct A {
long long x, y;
void bar () const {
A a;
a.y = ~y;
if ((a.x = -y)) ++a.y;
}
void foo (int) const;
};
void A::foo (int i) const {
if (i) bar(); if (i) bar();
}
------------------
Here's the error:
tmp/g> /home/bangerth/tmp/gcc/p/b/gcc/cc1plus -O -quiet PR7782.cc
PR7782.cc: In member function `void A::foo(int) const':
PR7782.cc:18: Internal compiler error in delete_insn, at cfgrtl.c:140
Richard, I understand that the bug may only have been uncovered by your
inserting an assertion, but maybe you can say something about it anyway.
Regards
Wolfgang
PS: I'm sorry that my first "victim" is someone who has, by reviewing all
those patches, helped gcc in such a major way...
-------------------------------------------------------------------------
Wolfgang Bangerth email: bangerth@ticam.utexas.edu
www: http://www.ticam.utexas.edu/~bangerth
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: optimization/7782: [3.3 regression] C++ compiler internal error in delete_insn, at cfgrtl.c:139
@ 2003-01-08 19:29 hubicka
0 siblings, 0 replies; 2+ messages in thread
From: hubicka @ 2003-01-08 19:29 UTC (permalink / raw)
To: gcc-bugs, gcc-prs, jvd, nobody
Synopsis: [3.3 regression] C++ compiler internal error in delete_insn, at cfgrtl.c:139
State-Changed-From-To: analyzed->closed
State-Changed-By: hubicka
State-Changed-When: Wed Jan 8 11:29:06 2003
State-Changed-Why:
Fixed by my patch
http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=7782
^ permalink raw reply [flat|nested] 2+ messages in thread
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2002-12-11 9:16 optimization/7782: [3.3 regression] C++ compiler internal error in delete_insn, at cfgrtl.c:139 Wolfgang Bangerth
2003-01-08 19:29 hubicka
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