[Bug bootstrap/41245] New: [4.5 Regression] Bootstrap broken on I386-apple-darwin9 at revision 151373

[Bug bootstrap/41245] New: [4.5 Regression] Bootstrap broken on I386-apple-darwin9 at revision 151373

[fxcoudert at gcc dot gnu dot org]

Subject says it all; i386-apple-darwin is a primary platform.

Comparing stages 2 and 3
warning: gcc/cc1-checksum.o differs
Bootstrap comparison failure!
gcc/tree.o differs

The output of "../trunk/contrib/compare-debug --preserve stage[23]-gcc/tree.o"
is long, so I'll attach it, but the end of it says:

stage2-gcc/tree.o.stripped stage3-gcc/tree.o.stripped differ: char 529, line 4
stripping off .eh_frame, then retrying
failed to strip off .eh_frame
stage2-gcc/tree.o.stripped stage3-gcc/tree.o.stripped differ: char 529, line 4
preserving stage2-gcc/tree.o.stripped stage3-gcc/tree.o.stripped


I also did a dwarfdump of both stripped files, and the difference between those
two is minimal:

--- dwarfdump2  2009-09-03 15:55:53.000000000 +0200
+++ dwarfdump3  2009-09-03 15:55:57.000000000 +0200
@@ -1,5 +1,5 @@
 ----------------------------------------------------------------------
- File: stage2-gcc/tree.o.stripped (i386)
+ File: stage3-gcc/tree.o.stripped (i386)
 ----------------------------------------------------------------------
 .debug_info contents:

@@ -32812,7 +32812,7 @@

 0x0001c7d3:         TAG_lexical_block [88] *
                      AT_ranges( 0x00000240
-                        [0x00001328 - 0x00001395)
+                        [0x0000132c - 0x00001395)
                         [0x00001398 - 0x0000139a)
                          End )


So I guess this should be easier to understand than the corresponding powerpc
issue (41224).


-- 
           Summary: [4.5 Regression] Bootstrap broken on I386-apple-darwin9
                    at revision 151373
           Product: gcc
           Version: 4.5.0
            Status: UNCONFIRMED
          Keywords: build
          Severity: normal
          Priority: P3
         Component: bootstrap
        AssignedTo: aoliva at gcc dot gnu dot org
        ReportedBy: fxcoudert at gcc dot gnu dot org
 GCC build triplet: i386-apple-darwin9.8.0
  GCC host triplet: i386-apple-darwin9.8.0
GCC target triplet: i386-apple-darwin9.8.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41245

[Bug bootstrap/41245] [4.5 Regression] Bootstrap broken on I386-apple-darwin9 at revision 151373

[howarth at nitro dot med dot uc dot edu]

------- Comment #1 from howarth at nitro dot med dot uc dot edu  2009-09-03 15:24 -------
Can you try a x86_64-apple-darwin9 bootstrap as well? It is puzzling that on
x86_64-apple-darwin10, the corresponding dwarfdump for the stage2 binaries is
empty.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41245

[Bug bootstrap/41245] [4.5 Regression] Bootstrap broken on I386-apple-darwin9 at revision 151373

[jakub at gcc dot gnu dot org]

------- Comment #2 from jakub at gcc dot gnu dot org  2009-09-03 15:32 -------
stage2 objects shouldn't contain any debug info, they are compiled with -g0.
What is being checked is that after stripping debug info, both -g0 and -g
objects should be the same (i.e. the code itself, data, ...).


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41245

[Bug bootstrap/41245] [4.5 Regression] Bootstrap broken on I386-apple-darwin9 at revision 151373

[rguenth at gcc dot gnu dot org]

-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |4.5.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41245

[Bug bootstrap/41245] [4.5 Regression] Bootstrap broken on I386-apple-darwin9 at revision 151373

[rguenth at gcc dot gnu dot org]

------- Comment #3 from rguenth at gcc dot gnu dot org  2009-09-06 23:00 -------
Please check again.


-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |WAITING


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41245

[Bug bootstrap/41245] [4.5 Regression] Bootstrap broken on I386-apple-darwin9 at revision 151373

[gerald at pfeifer dot com]

------- Comment #4 from gerald at pfeifer dot com  2009-09-07 13:10 -------
Confirming fix on i386-unknown-freebsd7.2 which had the same failure
mode.  Others will have to confirm i386-apple-darwin9, but I figured
that might be useful first confirmation.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41245

[Bug bootstrap/41245] [4.5 Regression] Bootstrap broken on I386-apple-darwin9 at revision 151373

[developer at sandoe-acoustics dot co dot uk]

------- Comment #5 from developer at sandoe-acoustics dot co dot uk  2009-09-07 13:49 -------
does this help?
http://gcc.gnu.org/ml/gcc-patches/2009-09/msg00467.html


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41245

[Bug bootstrap/41245] [4.5 Regression] Bootstrap broken on I386-apple-darwin9 at revision 151373

[howarth at nitro dot med dot uc dot edu]

------- Comment #6 from howarth at nitro dot med dot uc dot edu  2009-09-07 15:43 -------
I believe Mike Stump told me that it is possible that darwin's strip could
re-order the sections. Is that possibility addressed in the current patches?
Current x86_64-apple-darwin10 has no problems with gcc trunk at the moment.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41245

[Bug bootstrap/41245] [4.5 Regression] Bootstrap broken on I386-apple-darwin9 at revision 151373

[dominiq at lps dot ens dot fr]

------- Comment #7 from dominiq at lps dot ens dot fr  2009-09-07 16:00 -------
> Current x86_64-apple-darwin10 has no problems with gcc trunk at the moment.

I don't know for darwin10, but for darwin9 the comparison is currently
disabled, hence cannot fail!
If it is enabled again with Iain's patch (by replacing 'strip' by 'ld' see
pr41296), the comparison succeed on x86_64-apple-darwin9.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41245

[Bug bootstrap/41245] [4.5 Regression] Bootstrap broken on I386-apple-darwin9 at revision 151373

[developer at sandoe-acoustics dot co dot uk]

------- Comment #8 from developer at sandoe-acoustics dot co dot uk  2009-09-08 07:09 -------
(In reply to comment #6)
> I believe Mike Stump told me that it is possible that darwin's strip could
> re-order the sections. Is that possibility addressed in the current patches?

I don't believe re-ordering sections is the solution, in this case.

> Current x86_64-apple-darwin10 has no problems with gcc trunk at the moment.

can you confirm that the top level config produces lines like:
     target-libmudflap target-libada gnattools target-libffi target-zlib
target-libjava zlib target-boehm-gc
    (Any other directories should still work fine.)
THIS ONE >>> checking for default BUILD_CONFIG... bootstrap-debug
checking for bison... bison -y

and that the build produces:

rm -f stage_current
Comparing stages 2 and 3
warning: gcc/cc1-checksum.o differs
warning: gcc/cc1obj-checksum.o differs
warning: gcc/cc1objplus-checksum.o differs
warning: gcc/cc1plus-checksum.o differs
THIS ONE >>>> Comparison successful.


-- 

developer at sandoe-acoustics dot co dot uk changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |developer at sandoe-
                   |                            |acoustics dot co dot uk


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41245

[Bug bootstrap/41245] [4.5 Regression] Bootstrap broken on I386-apple-darwin9 at revision 151373

[developer at sandoe-acoustics dot co dot uk]

------- Comment #9 from developer at sandoe-acoustics dot co dot uk  2009-09-08 08:54 -------
Created an attachment (id=18538)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=18538&action=view)
patch allowing compare-debug to work with dwarf mach-o

this works for powerpc-apple-darwin8 (stabs or dwarf2) 
powerpc-apple-darwin9 
i686-apple-darwin9 
checked at 151491 (powerpc) and 151488 (i686)


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41245

[Bug bootstrap/41245] [4.5 Regression] Bootstrap broken on I386-apple-darwin9 at revision 151373

[howarth at nitro dot med dot uc dot edu]

------- Comment #10 from howarth at nitro dot med dot uc dot edu  2009-09-08 13:27 -------
(In reply to comment #9)
> Created an attachment (id=18538)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=18538&action=view) [edit]
> patch allowing compare-debug to work with dwarf mach-o
> 
> this works for powerpc-apple-darwin8 (stabs or dwarf2) 
> powerpc-apple-darwin9 
> i686-apple-darwin9 
> checked at 151491 (powerpc) and 151488 (i686)
> 

I had no problems bootstrapping r151463 on x86_64-apple-darwin10...

http://gcc.gnu.org/ml/gcc-testresults/2009-09/msg00563.html

I'll try x86_64-apple-darwin9 and i686-apple-darwin10 tonight.
Perhaps your compare-debug changes should be limited to
powerpc*-apple-darwin* and i*86-apple-darwin*. If I recall
correctly, cctools was reworked for x86_64 in Leopard so it may have
different behavior.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41245

[Bug bootstrap/41245] [4.5 Regression] Bootstrap broken on I386-apple-darwin9 at revision 151373

[developer at sandoe-acoustics dot co dot uk]

------- Comment #11 from developer at sandoe-acoustics dot co dot uk  2009-09-08 13:40 -------
(In reply to comment #10)
> (In reply to comment #9)
> > Created an attachment (id=18538)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=18538&action=view) [edit]
> I had no problems bootstrapping r151463 on x86_64-apple-darwin10...
> http://gcc.gnu.org/ml/gcc-testresults/2009-09/msg00563.html

well.. the bootstrap *was* fixed (at least on darwin9) - effectively by
disabling the compare-debug function.

so a successful bootstrap does not indicate that the object compares were
carried out - hence the two lines I indicated in comment #8  "THIS ONE>>>"

> I'll try x86_64-apple-darwin9 and i686-apple-darwin10 tonight.

great! .. thanks.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41245

[Bug bootstrap/41245] [4.5 Regression] Bootstrap broken on I386-apple-darwin9 at revision 151373

[howarth at nitro dot med dot uc dot edu]

------- Comment #12 from howarth at nitro dot med dot uc dot edu  2009-09-08 13:51 -------
I am confused then. Don't we need another patch beyond the one in
cmpdbg-1.diff.txt to re-enable the compare-debug function on darwin?


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41245

[Bug bootstrap/41245] [4.5 Regression] Bootstrap broken on I386-apple-darwin9 at revision 151373

[developer at sandoe-acoustics dot co dot uk]

------- Comment #13 from developer at sandoe-acoustics dot co dot uk  2009-09-08 14:07 -------
(In reply to comment #12)
> I am confused then. Don't we need another patch beyond the one in
> cmpdbg-1.diff.txt to re-enable the compare-debug function on darwin?

the default BUILD_CONFIG fragment is "bootstrap-debug" .
there is a configure test that tries to compare two binary files using
contrib/compare-debug.
if that test fails (it does for the unpatched compare-debug) the BUILD_CONFIG
fragment is set to ""
effectively this removes the comparison.

when the compare-debug is patched - and thus works - the test is NOT removed .. 

---

I'm doing x86_64-apple-darwin9 now - so no need to include that tonight - I can
confirm that this also needs the patch to configure with the test.  I'll add a
comment once the build completes as to whether that's successful.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41245

[Bug bootstrap/41245] [4.5 Regression] Bootstrap broken on I386-apple-darwin9 at revision 151373

[developer at sandoe-acoustics dot co dot uk]

------- Comment #14 from developer at sandoe-acoustics dot co dot uk  2009-09-08 14:44 -------
(In reply to comment #13)

> I'm doing x86_64-apple-darwin9 now - so no need to include that tonight - I can
> confirm that this also needs the patch to configure with the test.  I'll add a
> comment once the build completes as to whether that's successful.

x86_64-apple-darwin9 
bootstraps and successfully carries out the stage2/3 compare with the patch.
w/out the patch the comparison is not carried out.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41245

[Bug bootstrap/41245] [4.5 Regression] Bootstrap broken on I386-apple-darwin9 at revision 151373

[howarth at nitro dot med dot uc dot edu]

------- Comment #15 from howarth at nitro dot med dot uc dot edu  2009-09-08 23:13 -------
On x86_64-apple-darwin10 with the cmpdbg-1.diff.txt patch applied, I get...

Comparing stages 2 and 3
warning: gcc/cc1-checksum.o differs
warning: gcc/cc1obj-checksum.o differs
warning: gcc/cc1plus-checksum.o differs
Comparison successful.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41245

[Bug bootstrap/41245] [4.5 Regression] Bootstrap broken on I386-apple-darwin9 at revision 151373

[howarth at nitro dot med dot uc dot edu]

------- Comment #16 from howarth at nitro dot med dot uc dot edu  2009-09-09 01:59 -------
Ian,
     Don't forget to post the cmpdbg-1.diff.txt patch with changelog onto
gcc-patches.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41245

[Bug bootstrap/41245] [4.5 Regression] Bootstrap broken on I386-apple-darwin9 at revision 151373

[jakub at gcc dot gnu dot org]

------- Comment #17 from jakub at gcc dot gnu dot org  2009-09-10 14:33 -------
Subject: Bug 41245

Author: jakub
Date: Thu Sep 10 14:32:51 2009
New Revision: 151594

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=151594
Log:
        PR bootstrap/41245
        * compare-debug: Handle stripping of dwarf debug sections from darwin
        mach-o objects.

Modified:
    trunk/contrib/ChangeLog
    trunk/contrib/compare-debug


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41245

[Bug bootstrap/41245] [4.5 Regression] Bootstrap broken on I386-apple-darwin9 at revision 151373

[rguenth at gcc dot gnu dot org]

------- Comment #18 from rguenth at gcc dot gnu dot org  2009-09-18 09:06 -------
Fixed or what?


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41245

[Bug bootstrap/41245] [4.5 Regression] Bootstrap broken on I386-apple-darwin9 at revision 151373

[developer at sandoe-acoustics dot co dot uk]

------- Comment #19 from developer at sandoe-acoustics dot co dot uk  2009-09-18 12:56 -------
(In reply to comment #18)
> Fixed or what?

Yes at 151650 (for example) on i686-apple-darwin9 (current trunk, 151837,
appears to have a different problem).

Also OK on powerpc-apple-darwin8 (configured--with-dwarf2) at 151837.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41245

[Bug bootstrap/41245] [4.5 Regression] Bootstrap broken on I386-apple-darwin9 at revision 151373

[howarth at nitro dot med dot uc dot edu]

------- Comment #20 from howarth at nitro dot med dot uc dot edu  2009-09-18 13:15 -------
Have you opened a new PR for this new failure on i686-apple-darwin9 with
current gcc trunk? How exactly is the bootstrap failing in that case?


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41245

[Bug bootstrap/41245] [4.5 Regression] Bootstrap broken on I386-apple-darwin9 at revision 151373

[fxcoudert at gcc dot gnu dot org]

------- Comment #21 from fxcoudert at gcc dot gnu dot org  2009-09-27 10:10 -------
Fixed.


-- 

fxcoudert at gcc dot gnu dot org changed:

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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41245