c/7656: warning: comparison between signed and unsigned

c/7656: warning: comparison between signed and unsigned

[wharms]

>Number:         7656
>Category:       c
>Synopsis:       warning: comparison between signed and unsigned
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          mistaken
>Submitter-Id:   net
>Arrival-Date:   Tue Aug 20 08:46:03 PDT 2002
>Closed-Date:
>Last-Modified:
>Originator:     wharms@bfs.de
>Release:        gcc-3.2
>Organization:
>Environment:
Linux alpha 2.2.12
gcc version 2.95.2 19991024 (release)
gcc-3.2
./configure
./make
>Description:
gcc -c -DIN_GCC    -g -O2 -W -Wall -Wwrite-strings -Wstrict-prototypes -Wmissing
-prototypes -Wtraditional -pedantic -Wno-long-long  -DHAVE_CONFIG_H    -I. -I. -
I. -I./. -I./config -I./../include combine.c -o combine.o
combine.c: In function `combine_simplify_rtx':
combine.c:4106: warning: comparison between signed and unsigned
combine.c: In function `simplify_if_then_else':
combine.c:4866: warning: comparison between signed and unsigned
combine.c:4881: warning: comparison between signed and unsigned
combine.c: In function `force_to_mode':
combine.c:6774: warning: comparison between signed and unsigned
combine.c: In function `simplify_shift_const':
combine.c:8996: warning: comparison between signed and unsigned
combine.c:9114: warning: comparison between signed and unsigned
combine.c:9156: warning: comparison between signed and unsigned
combine.c:9190: warning: comparison between signed and unsigned
combine.c:9347: warning: comparison between signed and unsigned
combine.c:9402: warning: comparison between signed and unsigned
combine.c:9421: warning: comparison between signed and unsigned
combine.c:9445: warning: comparison between signed and unsigned
combine.c:9510: warning: comparison between signed and unsigned
combine.c: In function `recog_for_combine':
combine.c:9703: warning: pointer targets in passing arg 1 of `do_SUBST_INT' diff
er in signedness
combine.c: In function `simplify_comparison':
combine.c:10489: warning: comparison between signed and unsigned
combine.c:11028: warning: comparison between signed and unsigned
combine.c:11030: warning: comparison between signed and unsigned



gcc -c -DIN_GCC    -g -O2 -W -Wall -Wwrite-strings -Wstrict-prototypes -Wmissing
-prototypes -Wtraditional -pedantic -Wno-long-long  -DHAVE_CONFIG_H    -I. -I. -
I. -I./. -I./config -I./../include regclass.c -o regclass.o

regclass.c: In function `init_reg_sets_1':
regclass.c:490: warning: comparison between signed and unsigned
regclass.c: In function `choose_hard_reg_mode':
regclass.c:700: warning: comparison between signed and unsigned
regclass.c:710: warning: comparison between signed and unsigned
regclass.c:720: warning: comparison between signed and unsigned
regclass.c:730: warning: comparison between signed and unsigned
regclass.c:741: warning: comparison between signed and unsigned
regclass.c: In function `record_reg_classes':
regclass.c:1869: warning: comparison between signed and unsigned
regclass.c:1876: warning: comparison between signed and unsigned
regclass.c:1882: warning: comparison between signed and unsigned
regclass.c:1889: warning: comparison between signed and unsigned
>How-To-Repeat:

>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted:

Re: c/7656: warning: comparison between signed and unsigned

[jsm28]

Synopsis: warning: comparison between signed and unsigned

State-Changed-From-To: open->closed
State-Changed-By: jsm28
State-Changed-When: Mon Aug 26 05:47:45 2002
State-Changed-Why:
    Reported fixed.

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=7656

Re: c/7656: warning: comparison between signed and unsigned

[Andrew Pinski]

The following reply was made to PR c/7656; it has been noted by GNATS.

From: Andrew Pinski <pinskia@physics.uc.edu>
To: wharms@bfs.de
Cc: gcc-gnats@gcc.gnu.org
Subject: Re: c/7656: warning: comparison between signed and unsigned
Date: Tue, 20 Aug 2002 11:59:12 -0400

 This have been fixed in the top of the cvs:
 
 
 2002-08-15  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>
 
          * loop.c (scan_loop, move_movables, count_one_set): Cast 
 to avoid
          signed/unsigned warnings.
 
          * regclass.c (init_reg_sets_1, choose_hard_reg_mode,
          record_reg_classes): Likewise.
 
          * reload.c (reload_inner_reg_of_subreg, push_reload,
          find_reloads_address_1): Likewise.
 
 2002-07-08  Roger Sayle  <roger@eyesopen.com>
 
          * combine.c (combine_simplify_rtx): Add an explicit cast
          to avoid signed/unsigned comparison warning.
          (simplify_if_then_else): Likewise.
          (extended_count): Likewise.
          (simplify_shift_const): Likewise.
          (simplify_comparison): Likewise.
 
 Thanks,
 Andrew Pinski
 
 PS can someone close this report. Thanks.