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* objc/9267: bison 1.875 doesn't like reduce/reduce errors with %expect N
@ 2003-01-10 23:16 harinath
0 siblings, 0 replies; 2+ messages in thread
From: harinath @ 2003-01-10 23:16 UTC (permalink / raw)
To: gcc-gnats
>Number: 9267
>Category: objc
>Synopsis: bison 1.875 doesn't like reduce/reduce errors with %expect N
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: unassigned
>State: open
>Class: sw-bug
>Submitter-Id: net
>Arrival-Date: Fri Jan 10 15:16:00 PST 2003
>Closed-Date:
>Last-Modified:
>Originator: harinath@cs.umn.edu
>Release: gcc-3.4
>Organization:
>Environment:
i686-pc-linux-gnu
bison 1.875
>Description:
bison 1.875 exits on compiling objc-parse.y complaining that there are reduce/reduce conflicts where none were expected.
This is a recent change, but it is an extension of the behaviour documented in the Bison 1.28 info documentation. According to the Bison 1.28 documentation,
%expect N
Here N is a decimal integer. The declaration says there
should be no warning if there are N shift/reduce
conflicts and no reduce/reduce conflicts. The usual
warning is given if there are either more or fewer
conflicts, or if there are any reduce/reduce conflicts.
Bison 1.875 has converted the warning to an error in those exceptional cirumstances.
%expect was misused in objc-parse.y. Removing it should not result in more warnings than already there, and also prevents errors when using a newer bison.
>How-To-Repeat:
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted:
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: objc/9267: bison 1.875 doesn't like reduce/reduce errors with %expect N
@ 2003-01-28 2:00 gdr
0 siblings, 0 replies; 2+ messages in thread
From: gdr @ 2003-01-28 2:00 UTC (permalink / raw)
To: gcc-bugs, gcc-prs, harinath, nobody
Synopsis: bison 1.875 doesn't like reduce/reduce errors with %expect N
State-Changed-From-To: open->closed
State-Changed-By: gdr
State-Changed-When: Tue Jan 28 02:00:21 2003
State-Changed-Why:
Applied suggested patch on 3.2.2, 3.3 and 3.4 (mainline).
http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=9267
^ permalink raw reply [flat|nested] 2+ messages in thread
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2003-01-10 23:16 objc/9267: bison 1.875 doesn't like reduce/reduce errors with %expect N harinath
2003-01-28 2:00 gdr
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