[Bug c/14348] New: Cannot bootstrap GCC-3.3.4-pre with GCC-3.5 (experimental)

[Bug c/14348] New: Cannot bootstrap GCC-3.3.4-pre with GCC-3.5 (experimental)

[gdr at gcc dot gnu dot org]

Bootstrapping GCC-3.3.4-pre (freshly taken from repository) fails with

/home/gdr/redhat/3.gcc/gcc/read-rtl.c: In function `read_rtx':
/home/gdr/redhat/3.gcc/gcc/read-rtl.c:653: error: invalid lvalue in increment
make[2]: *** [read-rtl.o] Error 1

I think this is related to uses of some cast as lvalue in the obstack lib.

-- 
           Summary: Cannot bootstrap GCC-3.3.4-pre with GCC-3.5
                    (experimental)
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: critical
          Priority: P2
         Component: c
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: gdr at gcc dot gnu dot org
                CC: gcc-bugs at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14348

[Bug bootstrap/14348] Cannot bootstrap GCC-3.3.4-pre with GCC-3.5 (experimental)

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-02-29 19:39 -------
Confirmed, it is the lvalue patch which caused this, the patch to fix this is located at <http://
gcc.gnu.org/ml/gcc-patches/2003-10/msg02027.html>, only the obstack.h part though is needed.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
          Component|c                           |bootstrap
     Ever Confirmed|                            |1
   Last reconfirmed|0000-00-00 00:00:00         |2004-02-29 19:39:36
               date|                            |
   Target Milestone|---                         |3.3.4
            Version|unknown                     |3.3.4


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14348

[Bug bootstrap/14348] Cannot bootstrap GCC-3.3.4-pre with GCC-3.5 (experimental)

[mmitchel at gcc dot gnu dot org]

------- Additional Comments From mmitchel at gcc dot gnu dot org  2004-02-29 23:51 -------
It's not a problem if GCC N cannot be built with GCC N+1.

That will happen as we tighten up C conformance in newer versions of GCC.

There's nothing wrong with fixing GCC N to be more strictly conforming, but this
is just how things go.  It is much worse if we cannot build GCC N+1 with GCC N.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |INVALID


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14348

[Bug bootstrap/14348] Cannot bootstrap GCC-3.3.4-pre with GCC-3.5 (experimental)

[gdr at integrable-solutions dot net]

------- Additional Comments From gdr at integrable-solutions dot net  2004-03-01 00:13 -------
Subject: Re:  Cannot bootstrap GCC-3.3.4-pre with GCC-3.5 (experimental)

"mmitchel at gcc dot gnu dot org" <gcc-bugzilla@gcc.gnu.org> writes:

| It's not a problem if GCC N cannot be built with GCC N+1.

This not a problem with GCC-3.4.x.  It *is* a with 3.3.4 sources.

-- Gaby


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14348

[Bug bootstrap/14348] Cannot bootstrap GCC-3.3.4-pre with GCC-3.5 (experimental)

[gdr at gcc dot gnu dot org]

------- Additional Comments From gdr at gcc dot gnu dot org  2004-03-01 00:16 -------
This is NOT an invalid PR.  I'm working on applying the
obstack part of Joseph's patch.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |REOPENED
         Resolution|INVALID                     |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14348

[Bug bootstrap/14348] [3.3 only] Cannot bootstrap GCC-3.3.x with GCC-3.5 (experimental)

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-03-01 01:40 -------
I think the reason why Mark closed this is because it was it was matching his search of 
"3.4" in the summary and since 3.3.4 matches he saw it.  Let me change the summary so 
that it will not match anymore.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|REOPENED                    |NEW
            Summary|Cannot bootstrap GCC-3.3.4- |[3.3 only] Cannot bootstrap
                   |pre with GCC-3.5            |GCC-3.3.x with GCC-3.5
                   |(experimental)              |(experimental)


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14348

[Bug bootstrap/14348] [3.3 only] Cannot bootstrap GCC-3.3.x with GCC-3.5 (experimental)

[cvs-commit at gcc dot gnu dot org]

------- Additional Comments From cvs-commit at gcc dot gnu dot org  2004-03-02 02:18 -------
Subject: Bug 14348

CVSROOT:	/cvs/gcc
Module name:	gcc
Branch: 	gcc-3_3-branch
Changes by:	gdr@gcc.gnu.org	2004-03-02 02:18:17

Modified files:
	include        : ChangeLog obstack.h 
	libobjc        : ChangeLog 
	libobjc/objc   : hash.h 

Log message:
	include/
	PR bootstrap/14348
	Backport
	2003-10-22  Joseph S. Myers  <jsm@polyomino.org.uk>
	* obstack.h: Merge the following change from gnulib:
	2003-10-21  Paul Eggert  <eggert@twinsun.com>
	* obstack.h (obstack_1grow_fast): Properly parenthesize arg.
	(obstack_ptr_grow_fast, obstack_int_grow_fast):
	Don't use lvalue casts, as GCC plans to remove support for
	them
	in GCC 3.5.  Reported by Joseph S. Myers.  This bug
	was also present in the non-GCC version, indicating that this
	code had always been buggy and had never been widely used.
	(obstack_1grow, obstack_ptr_grow, obstack_int_grow,
	obstack_blank):
	Use the fast variant of each macro, rather than copying the
	definiens of the fast variant; that way, we'll be more likely
	to
	catch future bugs in the fast variants.
	libobjc/
	PR bootstrap/14348
	Backport
	2003-10-20  Joseph S. Myers  <jsm@polyomino.org.uk>
	* objc/hash.h (hash_string): Don't use a cast as an lvalue.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/include/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-3_3-branch&r1=1.124.2.12&r2=1.124.2.13
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/include/obstack.h.diff?cvsroot=gcc&only_with_tag=gcc-3_3-branch&r1=1.5&r2=1.5.50.1
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/libobjc/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-3_3-branch&r1=1.87.4.12&r2=1.87.4.13
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/libobjc/objc/hash.h.diff?cvsroot=gcc&only_with_tag=gcc-3_3-branch&r1=1.4&r2=1.4.14.1



-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14348

[Bug bootstrap/14348] [3.3 only] Cannot bootstrap GCC-3.3.x with GCC-3.5 (experimental)

[gdr at gcc dot gnu dot org]

------- Additional Comments From gdr at gcc dot gnu dot org  2004-03-02 02:24 -------
BAckport Jospeh's patch (obstack).

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14348