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To: cygwin AT cygwin DOT com
From: Jean-Pierre Flori <jpflori AT gmail DOT com>
Subject: Re: libtool weirdness (was Re: Broken MPIR 2.6.0 on Cygwin64)
Date: Fri, 21 Jun 2013 18:07:00 +0000 (UTC)
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Le Fri, 21 Jun 2013 17:27:22 +0000, Jean-Pierre Flori a écrit :

> Le Fri, 21 Jun 2013 17:06:03 +0000, Jean-Pierre Flori a écrit :
> 
>>> I'll also check without assembly optimizations, or lowering gcc
>>> optimization level, etc.
>> So I'm going to try that now.
> If i disable ASM routines by passing MPN_PATH=generic to configure, then
> (in the static setting at least) most tests now pass.

Using the default MPN_PATH I get "x86_64/sandybridge x86_64 generic", the 
first segfault I get is in the first test in the mpn dir: t-addadd_n.c.
GDB points to the loop1() function:

jp AT napoleon-7 ~/mpir-2.6.0/tests/mpn
$ gdb t-addadd_n.exe
GNU gdb (GDB) 7.6.50.20130320-cvs
Copyright (C) 2013 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/
gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-unknown-cygwin".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from /home/jp/mpir-2.6.0/tests/mpn/t-addadd_n.exe...done.
(gdb) r
Starting program: /home/jp/mpir-2.6.0/tests/mpn/t-addadd_n.exe
[New Thread 2576.0x9b8]
[New Thread 2576.0x398]

Program received signal SIGSEGV, Segmentation fault.
0x00000001004020ae in loop1 ()
(gdb) bt
#0  0x00000001004020ae in loop1 ()
#1  0x0000000100401fe7 in __gmpn_addadd_n (t=0x1c8fc0, x=<optimized out>,
    y=<optimized out>, z=<optimized out>, n=1) at addadd_n.c:50
#2  0x0000000100425fb6 in main () at t-addadd_n.c:58

apparently coming from add_n.as.
If someone sees something wrong in the asm files, I have no experience 
with them.


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