Bug#427907: [hppa] git-core selftest failure with -O2 and -O1, -O0 works

[Matthias Klose <doko@cs.tu-berlin.de>]

probably related to #427398.

Gerrit Pape writes:
> Package: gcc-4.1
> Version: 4.1.2-11
> 
> See
>  http://buildd.debian.org/fetch.cgi?&pkg=git-core&ver=1%3A1.5.2.1-1&arch=hppa&stamp=1180881720&file=log
> 
> I can reproduce this in paer's sid chroot as follows:
> 
> $ apt-get source git-core
> Reading package lists... Done
> Building dependency tree... Done
> Need to get 1513kB of source archives.
> Get:1 http://mirrors.kernel.org sid/main git-core 1:1.5.2.1-1 (dsc) [798B]
> Get:2 http://mirrors.kernel.org sid/main git-core 1:1.5.2.1-1 (tar) [1404kB]
> Get:3 http://mirrors.kernel.org sid/main git-core 1:1.5.2.1-1 (diff) [109kB]
> Fetched 1513kB in 0s (1660kB/s)   
> gpg: Signature made Sun Jun  3 05:44:52 2007 MDT using DSA key ID BC70A6FF
> gpg: Can't check signature: public key not found
> dpkg-source: extracting git-core in git-core-1.5.2.1
> dpkg-source: unpacking git-core_1.5.2.1.orig.tar.gz
> dpkg-source: applying ./git-core_1.5.2.1-1.diff.gz
> $ cd git-core-1.5.2.1/
> $ make CFLAGS=-O2 >/dev/null && (cd t && sh t6026-merge-attr.sh)
> GIT_VERSION = 1.5.2.1
>     * new build flags or prefix
> [...]
> * failed 1 among 6 test(s)
> $ make CFLAGS=-O0 >/dev/null && (cd t && sh t6026-merge-attr.sh)
>     * new build flags or prefix
> /usr/bin/ld: warning: libcrypto.so.0.9.7, needed by
> /usr/lib/gcc/hppa-linux-gnu/4.1.3/../../../libcurl.so, may conflict with libcrypto.so.0.9.8
> /usr/bin/ld: warning: libcrypto.so.0.9.7, needed by
> /usr/lib/gcc/hppa-linux-gnu/4.1.3/../../../libcurl.so, may conflict with libcrypto.so.0.9.8
> Writing perl.mak for Git
> *   ok 1: setup
> *   ok 2: merge
> *   ok 3: check merge result in index
> *   ok 4: check merge result in working tree
> *   ok 5: custom merge backend
> *   ok 6: custom merge backend
> * passed all 6 test(s)
> $ 
> 
> I suspect the compiler's doing bad optimization, all other archs built
> successfully.
> 
> Thanks, Gerrit.
> 
> 
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