Re: [Opencxx-users] Cygwin problem

[Grigorenko D. <pos...@na...>]

Hello.

> This 77-th line of iostream looks like a bug in debugger or compiler
> (invalid debugging information), I remember that I had similar problems
> somewhere else.
Your are right. I found that problem is in the lt_dlinit() call (the first
call of the ltdl function). You can find it in
the InitDynamicLoader() function in driver2.cc. I checked that sigfault
heppens befor the first line of lt_dlinit and befor the first line of the
main function in ltdl. (We have to add an empty main funcion in ltdl.c).
I  investigated that in case of static linking occ which ltdl.o (instead of
using -lltdl) it is all right!
So I think that problem is in the linking process. Namely, I think what the
lt_dlinit() function address is incorrect.

>  From your description it is difficult to tell where the sigfault really
> happens. As far as I understand line 75 is the first line of main().
> Perhaps the segfault happens during initialization of static variables.
> One way to find out would be to load core file to gdb ('gdb occ core')
> and examine stack trace ('bt').
It does not work on cygwin stackdump file in this way.
Error: "occ.exe.stackdump" is not a core dump: File
format not recognized