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From: Wolfgang Bangerth <bangerth@ticam.utexas.edu> To: nobody@gcc.gnu.org Cc: gcc-prs@gcc.gnu.org, Subject: Re: c/8962: "-O2 -mmmx" makes gcc seg fault Date: Fri, 03 Jan 2003 23:56:00 -0000 [thread overview] Message-ID: <20030103235601.27013.qmail@sources.redhat.com> (raw) The following reply was made to PR c/8962; it has been noted by GNATS. From: Wolfgang Bangerth <bangerth@ticam.utexas.edu> To: Mack Lobell <macklobell@hotmail.com> Cc: gcc-bugs@gcc.gnu.org, <gcc-gnats@gcc.gnu.org> Subject: Re: c/8962: "-O2 -mmmx" makes gcc seg fault Date: Fri, 3 Jan 2003 17:53:52 -0600 (CST) Hi Mack, > i removed all functions except the one that makes gcc crash. I have also > removed some parts of the code in this function. The file is now ~14000 > lines of code, where the function is ~3000 lines and the rest are types, > forward declarations, etc.. > > If i try to remove any more code in the function the compiler won't crash. > Even if i remove something simple as an assignment the compiler starts to > work. I have also noticed that if i remove an unused type (e.g. typedef > _fpos_t fpos_t;) the compiler starts to work. > > Basically i'm stuck, i can't get it smaller than this. Do you have any > "tricks" to reduce the size? If you can't shorten the testcase further, then so be it. There just seem to be such reports. If you want to try something else, there is a project for automatic reduction of testcases. I haven't tried it myself, and it is said to be slow, but maybe you want something that runs during the night, or on a weekend. Take a look at the Delta Debugging project at http://www.st.cs.uni-sb.de/dd/ If you send it to me in private mail, I can attach your somewhat-reduced testcase to the PR. Regards Wolfgang ------------------------------------------------------------------------- Wolfgang Bangerth email: bangerth@ticam.utexas.edu www: http://www.ticam.utexas.edu/~bangerth
next reply other threads:[~2003-01-03 23:56 UTC|newest] Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top 2003-01-03 23:56 Wolfgang Bangerth [this message] -- strict thread matches above, loose matches on Subject: below -- 2003-01-07 20:56 Wolfgang Bangerth 2002-12-22 0:56 Mack Lobell 2002-12-21 10:16 Wolfgang Bangerth 2002-12-21 9:46 Mack Lobell 2002-12-21 8:56 Wolfgang Bangerth 2002-12-21 7:56 Mack Lobell 2002-12-20 20:32 bangerth 2002-12-16 7:16 macklobell
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