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Re: segfault with '-v' option
From: |
Akim Demaille |
Subject: |
Re: segfault with '-v' option |
Date: |
04 Oct 2000 14:01:46 +0200 |
User-agent: |
Gnus/5.0807 (Gnus v5.8.7) XEmacs/21.1 (Channel Islands) |
>>>>> "Piotr" == Piotr Gackiewicz <address@hidden> writes:
Piotr> Bug: When parsing attached input file with '-v' options, bison
Piotr> gets signal no 11 - Segmentation fault. I know, this input
Piotr> file is bad, ugly and without any sense ;-) - I'm not skilled
Piotr> with gramatics yet. But it shouldn't crash bison anyway. It
Piotr> doesn't do that without beeing verbose - without '-v' option.
Thanks for the sample, it's now part of the test suite.
Neil> Hi Piotr,
Neil> I suggest this patch as a (temporary) fix for this problem - it
Neil> now emits an appropriate warning, and continues without
Neil> segfaulting.
Thanks for the patch, it's now part of bison :)
Neil> The parse_token_decl() routine in reader.c really needs to be
Neil> rewritten - it is far too permissive of bad input. This also
Neil> goes for other routines in reader.c.
I very much agree. I think we're on the right tracks now.
Akim
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