Re: c/3954: simple returns are broken when the return value is in a pseudo

Re: c/3954: simple returns are broken when the return value is in a pseudo

[rth]

Synopsis: simple returns are broken when the return value is in a pseudo

State-Changed-From-To: open->feedback
State-Changed-By: rth
State-Changed-When: Sun Mar 24 18:16:36 2002
State-Changed-Why:
    Should be fixed for 3.1, since all returns now use pseudos.

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=3954

Re: c/3954: simple returns are broken when the return value is in a pseudo

[danglin]

Synopsis: simple returns are broken when the return value is in a pseudo

Responsible-Changed-From-To: unassigned->danglin
Responsible-Changed-By: danglin
Responsible-Changed-When: Tue Jun 18 14:44:53 2002
Responsible-Changed-Why:
    Mine.
State-Changed-From-To: feedback->closed
State-Changed-By: danglin
State-Changed-When: Tue Jun 18 14:44:53 2002
State-Changed-Why:
    See <http://gcc.gnu.org/ml/gcc-patches/2001-08/msg00507.html>.

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=3954

c/3954: simple returns are broken when the return value is in a pseudo

[dave.anglin]

>Number:         3954
>Category:       c
>Synopsis:       simple returns are broken when the return value is in a pseudo
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Mon Aug 06 21:56:01 PDT 2001
>Closed-Date:
>Last-Modified:
>Originator:     Dave Anglin
>Release:        gcc-3.0
>Organization:
>Environment:
vax-dec-ultrix4.3
>Description:
This was first noticed with g++ but potentially affect C as well.  It only affects ports that don't use an epilogue for function returns.

Incorrect code will be generated for the following test program when compiled with g++:

char *
srealloc (char *p, char *q, int i)
{
  if (i == 0)
    return p;
  else
    return q;
}
>How-To-Repeat:

>Fix:
A patch to fix the above problem is presently being tested.
If testing is successful, I will submit it later today for
review.
>Release-Note:
>Audit-Trail:
>Unformatted: