[Bug target/25317] [4.1 Regression] hppa64 EH failures

["dave at hiauly1 dot hia dot nrc dot ca" <gcc-bugzilla at gcc dot gnu dot org>]

------- Comment #3 from dave at hiauly1 dot hia dot nrc dot ca  2005-12-09 18:31 -------
Subject: Re:  [4.1 Regression] hppa64 EH failures

> ------- Comment #2 from joseph at codesourcery dot com  2005-12-09 16:58 -------
> Subject: Re:  [4.1 Regression] hppa64 EH failures
> 
> On Fri, 9 Dec 2005, danglin at gcc dot gnu dot org wrote:
> 
> > Is this with the current CVS version of GAS?  A critical bug affecting
> > data relocations was recently fixed.
> 
> This is with the current binutils release (2.16.1); when I started 4.1 
> branch testing I made that use release binutils rather than mainline 
> binutils which is being used with mainline GCC testing, though the 
> mainline tester had only recently started using mainline binutils for 
> HP-UX before 4.1 branched and no problems had been observed before then 
> with 2.16.1.  When there's a new binutils release I expect to switch the 
> 4.1 branch testing to that.

Ok.  Can't do much about the bug in 2.16.1.

2.16.1 incorrectly handles the fixup associated with the difference
of two symbols.  The two 32-bit portions of a 64-bit difference are
swapped in 2.16.1.  This affects dwarf debugging output and EH
exception support.

I recently made dwarf2 EH support the default on both the 32 and 64-bit
hpux ports to use EH exception support.  I would have liked more time
between the gas fix and enabling this feature, but Richard was pushing.

I believe that you can avoid these errors by using the sjlj exception
support.  In a sense, these errors aren't regressions as the dwarf2
eh support is new.  With cvs binutils, I don't see any regressions
relative to the previous sjlj support on this target.

Dave


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25317