[Bug c/23161] New: Labels and empty statement warnings

[Bug c/23161] New: Labels and empty statement warnings

[neil at gcc dot gnu dot org]

void foo (void)
{
  if (0)
    a: ;
}

Compile with -W, there is no warning about the empty statement.  Remove the
label and there is.  IMO the warning should be independent of whether the
statement is labelled.

-- 
           Summary: Labels and empty statement warnings
           Product: gcc
           Version: 4.1.0
            Status: UNCONFIRMED
          Severity: minor
          Priority: P3
         Component: c
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: neil at gcc dot gnu dot org
                CC: gcc-bugs at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23161

[Bug c/23161] Labels and empty statement warnings

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2005-07-31 16:42 -------
Confirmed, for some reason on the mainline and 4.0 branch, we ICE with -W, which I am filing under 
23165.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
  BugsThisDependsOn|                            |23165
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|                            |1
           Keywords|                            |diagnostic
   Last reconfirmed|0000-00-00 00:00:00         |2005-07-31 16:42:20
               date|                            |
            Version|4.1.0                       |3.4.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23161

[Bug c/23161] Labels and empty statement warnings

[phython at gcc dot gnu dot org]

------- Additional Comments From phython at gcc dot gnu dot org  2005-07-31 18:12 -------
 This is almost the same as PR23165, the same patch fixes this.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|unassigned at gcc dot gnu   |phython at gcc dot gnu dot
                   |dot org                     |org
             Status|NEW                         |ASSIGNED
   Last reconfirmed|2005-07-31 16:42:20         |2005-07-31 18:12:31
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23161

[Bug c/23161] Labels and empty statement warnings

[cvs-commit at gcc dot gnu dot org]

------- Additional Comments From cvs-commit at gcc dot gnu dot org  2005-08-09 04:21 -------
Subject: Bug 23161

CVSROOT:	/cvs/gcc
Module name:	gcc
Changes by:	phython@gcc.gnu.org	2005-08-09 04:21:26

Modified files:
	gcc            : ChangeLog c-typeck.c 
	gcc/testsuite  : ChangeLog 
Added files:
	gcc/testsuite/gcc.dg: pr23165.c 

Log message:
	2005-08-09  James A. Morrison  <phython@gcc.gnu.org>
	
	PR c/23161
	PR c/23165
	* c-typeck.c (c_finish_if_stmt): Look into STATEMENT_LISTs to see
	if the if is really empty.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.9684&r2=2.9685
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/c-typeck.c.diff?cvsroot=gcc&r1=1.474&r2=1.475
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/ChangeLog.diff?cvsroot=gcc&r1=1.5896&r2=1.5897
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/gcc.dg/pr23165.c.diff?cvsroot=gcc&r1=NONE&r2=1.1



-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23161

[Bug c/23161] Labels and empty statement warnings

[phython at gcc dot gnu dot org]

------- Additional Comments From phython at gcc dot gnu dot org  2005-08-09 04:28 -------
fixed.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|                            |FIXED
   Target Milestone|---                         |4.1.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23161

[Bug c/23161] Labels and empty statement warnings

[cvs-commit at gcc dot gnu dot org]

------- Additional Comments From cvs-commit at gcc dot gnu dot org  2005-09-06 06:07 -------
Subject: Bug 23161

CVSROOT:	/cvs/gcc
Module name:	gcc
Branch: 	gcc-4_0-branch
Changes by:	phython@gcc.gnu.org	2005-09-06 06:07:07

Modified files:
	gcc            : ChangeLog c-typeck.c 
	gcc/testsuite  : ChangeLog 
Added files:
	gcc/testsuite/gcc.dg: pr23165.c 

Log message:
	2005-09-05  James A. Morrison  <phython@gcc.gnu.org>
	
	PR c/23161
	PR c/23165
	* c-typeck.c (c_finish_if_stmt): Look into STATEMENT_LISTs to see
	if the if is really empty.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=2.7592.2.411&r2=2.7592.2.412
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/c-typeck.c.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=1.419.2.11&r2=1.419.2.12
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=1.5084.2.379&r2=1.5084.2.380
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/gcc.dg/pr23165.c.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=NONE&r2=1.1.12.1



-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23161

[Bug c/23161] Labels and empty statement warnings

[phython at gcc dot gnu dot org]

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|4.1.0                       |4.0.2


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23161

[Bug c/23161] Labels and empty statement warnings

[phython at gcc dot gnu dot org]

-- 
Bug 23161 depends on bug 23165, which changed state.

Bug 23165 Summary: [4.0 regression] ICE with -W
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23165

           What    |Old Value                   |New Value
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|                            |FIXED

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23161