[Bug objc/31013] New: [4.3 Regression] objc PCH is broken on powerpc-darwin again

[Bug objc/31013] New: [4.3 Regression] objc PCH is broken on powerpc-darwin again

[pinskia at gcc dot gnu dot org]

Caused by:
+2007-02-16  Geoffrey Keating  <geoffk@apple.com>
+
+       * config/darwin.h (LINK_SPEC): Always pass -macosx_version_min
+       to linker.

Worked in: http://gcc.gnu.org/ml/gcc-testresults/2007-02/msg00636.html
Failed with: http://gcc.gnu.org/ml/gcc-testresults/2007-02/msg00652.html

And that is the only patch between those two testresults.

>From the .log:
FAIL: objc.dg/pch/interface-1.m -O0 -g (test for excess errors)
Excess errors:
/Users/regress/tbox/svn-gcc/gcc/testsuite/objc.dg/pch/interface-1.m:1:25:
error: interface-1.h: No such file or
directory/Users/regress/tbox/svn-gcc/gcc/testsuite/objc.dg/pch/interface-1.m:1:25:
error: one or more PCH files were found, but they were invalid
/Users/regress/tbox/svn-gcc/gcc/testsuite/objc.dg/pch/interface-1.m:1:25:
error: use -Winvalid-pch for more
information/Users/regress/tbox/svn-gcc/gcc/testsuite/objc.dg/pch/interface-1.m:4:
warning: cannot find interface declaration for 'TestClass'


-- 
           Summary: [4.3 Regression] objc PCH is broken on powerpc-darwin
                    again
           Product: gcc
           Version: 4.3.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: objc
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: pinskia at gcc dot gnu dot org
GCC target triplet: powerpc-darwin


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31013

[Bug objc/31013] [4.3 Regression] objc PCH is broken on powerpc-darwin again

[pinskia at gcc dot gnu dot org]

-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |4.3.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31013

[Bug objc/31013] [4.3 Regression] objc PCH is broken on powerpc-darwin again

[geoffk at gcc dot gnu dot org]

------- Comment #1 from geoffk at gcc dot gnu dot org  2007-03-02 18:59 -------
This is because gccspec.c is adding -shared-libgcc when it sees an Objective-C
file, but inconsistently; it doesn't handle -x options, it doesn't handle the
-objC flag.  On Darwin, it's wrong to add -shared-libgcc like this because the
objective-C runtime uses setjmp/longjmp exceptions and some versions of Darwin
don't have a shared libgcc to use.


-- 

geoffk at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|unassigned at gcc dot gnu   |geoffk at gcc dot gnu dot
                   |dot org                     |org
             Status|UNCONFIRMED                 |ASSIGNED
     Ever Confirmed|0                           |1
   Last reconfirmed|0000-00-00 00:00:00         |2007-03-02 18:59:24
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31013

[Bug objc/31013] [4.3 Regression] objc PCH is broken on powerpc-darwin again

[geoffk at gcc dot gnu dot org]

------- Comment #2 from geoffk at gcc dot gnu dot org  2007-03-07 00:16 -------
The change to gccspec.c was made by Franz Sirl on 2001-06-16, revision 43421. 
The mail on gcc-patches is at
<http://gcc.gnu.org/ml/gcc-patches/2001-04/msg01394.html>.  There's further
discussion at <http://gcc.gnu.org/ml/gcc-patches/2001-03/msg00427.html>.  I
think it's relying on the property that the GNU runtime is (always?) linked
with the dynamic libgcc.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31013

[Bug objc/31013] [4.3 Regression] objc PCH is broken on powerpc-darwin again

[pinskia at gcc dot gnu dot org]

------- Comment #3 from pinskia at gcc dot gnu dot org  2007-03-07 00:26 -------
I should mention that with the GNU runtime, we want the shared libgcc for
exceptions so any patch that breaks the GNU runtime linking with the shared
libgcc should be rejected.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31013

[Bug objc/31013] [4.3 Regression] objc PCH is broken on powerpc-darwin again

[geoffk at gcc dot gnu dot org]

------- Comment #4 from geoffk at gcc dot gnu dot org  2007-03-08 19:56 -------
Subject: Bug 31013

Author: geoffk
Date: Thu Mar  8 19:56:37 2007
New Revision: 122709

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=122709
Log:
        PR 31013
        * gccspec.c (lang_specific_driver): Do nothing when NEXT_OBJC_RUNTIME
        is declared.
        * config/darwin.h (REAL_LIBGCC_SPEC): When -fgnu-runtime is
        passed, use shared libgcc.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/darwin.h
    trunk/gcc/gccspec.c


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31013

[Bug objc/31013] [4.3 Regression] objc PCH is broken on powerpc-darwin again

[geoffk at gcc dot gnu dot org]

------- Comment #5 from geoffk at gcc dot gnu dot org  2007-03-08 20:31 -------
This should be fixed now.


-- 

geoffk at gcc dot gnu dot org changed:

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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31013

[Bug objc/31013] [4.3 Regression] objc PCH is broken on powerpc-darwin again

[geoffk at gcc dot gnu dot org]

------- Comment #6 from geoffk at gcc dot gnu dot org  2007-03-10 00:00 -------
Subject: Bug 31013

Author: geoffk
Date: Sat Mar 10 00:00:09 2007
New Revision: 122774

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=122774
Log:
        PR 31013
        * gccspec.c (lang_specific_driver): Do nothing when NEXT_OBJC_RUNTIME
        is declared.
        * config/darwin.h (REAL_LIBGCC_SPEC): When -fgnu-runtime is
        passed, use shared libgcc.

Modified:
    branches/gcc-4_2-branch/gcc/ChangeLog
    branches/gcc-4_2-branch/gcc/config/darwin.h
    branches/gcc-4_2-branch/gcc/gccspec.c


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31013