Re: c++/4872: missed warning (no return) -- regression from 2.95

Re: c++/4872: missed warning (no return) -- regression from 2.95

[lerdsuwa]

The following reply was made to PR c++/4872; it has been noted by GNATS.

From: lerdsuwa@gcc.gnu.org
To: bh@techhouse.brown.edu, gcc-bugs@gcc.gnu.org, gcc-gnats@gcc.gnu.org,
  gcc-prs@gcc.gnu.org, nobody@gcc.gnu.org
Cc:  
Subject: Re: c++/4872: missed warning (no return) -- regression from 2.95
Date: 16 Nov 2001 17:13:31 -0000

 Synopsis: missed warning (no return) -- regression from 2.95
 
 State-Changed-From-To: open->analyzed
 State-Changed-By: lerdsuwa
 State-Changed-When: Fri Nov 16 09:13:31 2001
 State-Changed-Why:
     Confirmed.
 
 http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&pr=4872&database=gcc

Re: c++/4872: missed warning (no return) -- regression from 2.95

[jason]

Synopsis: missed warning (no return) -- regression from 2.95

Responsible-Changed-From-To: unassigned->jason
Responsible-Changed-By: jason
Responsible-Changed-When: Sat Feb  2 00:33:09 2002
Responsible-Changed-Why:
    mine
State-Changed-From-To: analyzed->closed
State-Changed-By: jason
State-Changed-When: Sat Feb  2 00:33:09 2002
State-Changed-Why:
    fixed for 3.1 by
    
    2002-02-01  Jason Merrill  <jason@redhat.com>
    
            PR c++/4872
            * decl.c (finish_function): Warn about a non-void function with
            no return statement and no abnormal exit.
            * cp-tree.h (struct cp_language_function): Add returns_abnormally.
            (current_function_returns_abnormally): New macro.
            * call.c (build_call): Set it.

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=4872

Re: c++/4872: missed warning (no return) -- regression from 2.95

[lerdsuwa]

Synopsis: missed warning (no return) -- regression from 2.95

State-Changed-From-To: open->analyzed
State-Changed-By: lerdsuwa
State-Changed-When: Fri Nov 16 09:13:31 2001
State-Changed-Why:
    Confirmed.

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&pr=4872&database=gcc

c++/4872: missed warning (no return) -- regression from 2.95

[bh]

>Number:         4872
>Category:       c++
>Synopsis:       missed warning (no return) -- regression from 2.95
>Confidential:   no
>Severity:       critical
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue Nov 13 19:46:00 PST 2001
>Closed-Date:
>Last-Modified:
>Originator:     bh@techhouse.brown.edu
>Release:        3.0.1
>Organization:
>Environment:

>Description:
The code in H-T-R should give a warning since the 
function doesn't return a value, but no warning
is issued under 3.0.2, 3.0.1 (where it bit me),
or 2.96 (redhat), even with -W -Wall -O2

This is a regression from 2.95.3
>How-To-Repeat:
cat > foo.cpp << EOF
class interval {
    public:
        interval operator - () {
            int tmp = upper_;
            upper_ = -lower_;
            lower_ = -tmp;
        }

    private:
        unsigned upper_, lower_;
};
EOF
gcc -c foo.cpp -W -Wall -O2
>Fix:

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