Re: bignum branch

[Andy Moreton]

On Sat 11 Aug 2018, Eli Zaretskii wrote:

>> From: Andy Moreton <address@hidden>
>> Date: Sat, 11 Aug 2018 17:54:42 +0100
>> 
>> 3346            return make_fixnum (mpz_popcount (XBIGNUM (value)->value));
>> (gdb) s
>> __gmpz_popcount (__gmp_u=0x4c5ec60) at C:/msys64/mingw64/include/gmp.h:1844
>> 1844      if (__GMP_LIKELY (__gmp_usize > 0))
>> (gdb) s
>> 1845        __gmp_result =  mpn_popcount (__gmp_u->_mp_d, __gmp_usize);
>> (gdb) stepi
>> 0x000000040016e405      1845        __gmp_result =  mpn_popcount 
>> (__gmp_u->_mp_d, __gmp_usize);
>> (gdb)
>> 0x000000046ace5dc0 in ?? ()
>> (gdb)
>> 
>> Thread 1 received signal SIGSEGV, Segmentation fault.
>> 0x000000046ace5dc0 in ?? ()
>
> What do the following GDB commands show, in the crashing build?
>
>   (gdb) disassemble __gmpz_popcount
>   (gdb) ptype __gmpz_popcount
>   (gdb) ptype __gmpn_popcount

Nothing useful :-(

Thread 1 hit Breakpoint 4, Flogcount (value=XIL(0x4bf8631)) at 
C:/emacs/git/emacs/bignum/src/data.c:3340
3340    {
(gdb) disassemble __gmpz_popcount
No symbol "__gmpz_popcount" in current context.
(gdb) ptype __gmpz_popcount
No symbol "__gmpz_popcount" in current context.
(gdb) ptype __gmpn_popcount
type = <unknown return type> ()
(gdb)

Dependency Walker shows __gmpn_popcount at ordinal 306 in the export
table of libgmp-10.dll, and __gmpz_popcount at ordinal 561, so gdb
should be able to find them.

    AndyM