Bug 18645

I see tst-cleanupx4 fail on F22 for i686 with glibc-2.21, so it has to be something that changed earlier.

+ read testcase
+ echo nptl/tst-cleanupx4
nptl/tst-cleanupx4
+ cat nptl/tst-cleanupx4.out
test 0
clh (1)
clh (2)
clh (3)
test 1
clh (1)
clh (4) 
clh (5)
clh (6)
test 2 
clh (7) 
clh (8)
global = 64, expected 120
test 3
clh (1)
clh (2)
clh (9)
clh (10)

(In reply to Carlos O'Donell from comment #1)
> I see tst-cleanupx4 fail on F22 for i686 with glibc-2.21, so it has to be
> something that changed earlier.

This may be a compiler bug:

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66334

tst-cleanupx4.o is the same as tst-cleanup4.c, but compiled with
-fexceptions.  tst-cleanupx4 is linked with tst-cleanupx4.o and
tst-cleanup4aux.o which is compiled without -fexceptions.  Is this
a typo?

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- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=34cdba3c2e1e6e9a612c14e6baef2b0ec6ae0fa2

commit 34cdba3c2e1e6e9a612c14e6baef2b0ec6ae0fa2
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Wed Jun 1 14:11:16 2016 -0700

    Compile tst-cleanupx4 test with -fexceptions
    
    tst-cleanupx4 is linked with tst-cleanupx4.o and tst-cleanup4aux.o.
    Since tst-cleanupx4.o is compiled from tst-cleanup4.c with -fexceptions,
    tst-cleanup4aux.c should also be compiled with -fexceptions.
    
    Tested on x86-64 and i686.
    
    	[BZ 18645]
    	* nptl/Makefile (extra-test-objs): Add tst-cleanupx4aux.o.
    	(test-extras): Add tst-cleanupx4aux.
    	(CFLAGS-tst-cleanupx4aux.c): New.  Set to -fexceptions.
    	($(objpfx)tst-cleanupx4): Replace tst-cleanup4aux.o with
    	tst-cleanupx4aux.o.
    	* nptl/tst-cleanupx4aux.c: New file.

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commit dfc9ea7b017570ee87d4cbd2bfe62833f0da64e1
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Wed Jun 29 20:24:30 2016 -0700

    Compile tst-cleanupx4 test with -fexceptions
    
    tst-cleanupx4 is linked with tst-cleanupx4.o and tst-cleanup4aux.o.
    Since tst-cleanupx4.o is compiled from tst-cleanup4.c with -fexceptions,
    tst-cleanup4aux.c should also be compiled with -fexceptions.
    
    Tested on x86-64 and i686.
    
    	[BZ #18645]
    	* nptl/Makefile (extra-test-objs): Add tst-cleanupx4aux.o.
    	(test-extras): Add tst-cleanupx4aux.
    	(CFLAGS-tst-cleanupx4aux.c): New.  Set to -fexceptions.
    	($(objpfx)tst-cleanupx4): Replace tst-cleanup4aux.o with
    	tst-cleanupx4aux.o.
    	* nptl/tst-cleanupx4aux.c: New file.

-----------------------------------------------------------------------

Summary of changes:
 ChangeLog               |   10 ++++++++++
 nptl/Makefile           |    8 +++++---
 nptl/tst-cleanupx4aux.c |    1 +
 3 files changed, 16 insertions(+), 3 deletions(-)
 create mode 100644 nptl/tst-cleanupx4aux.c

Fixed for 2.24.

Also see:

https://www.sourceware.org/ml/libc-alpha/2014-07/msg00299.html
https://www.sourceware.org/ml/libc-alpha/2015-11/msg00533.html