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MathGroup Archive 2000

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Help, my MathLink Examples segfault.

  • To: mathgroup at smc.vnet.net
  • Subject: [mg23178] Help, my MathLink Examples segfault.
  • From: raholcom at unity.ncsu.edu (Richard Allan Holcombe)
  • Date: Fri, 21 Apr 2000 00:47:06 -0400 (EDT)
  • Organization: North Carolina State University
  • Sender: owner-wri-mathgroup at wolfram.com

I would like to use mathlink.  I downloaded the DeveloperKit, and the makefile
successfully compiled the example programs, but when I run the programs,
they crash.  I am running mathematica 3.0 for students, on RedHat6.1 Linux 
I have the latest mathlink.h, mathML.a files, and the 
PrebuiltExamples work fine.  When run through gdb I get:
(gdb) run
Starting program: /home/raholcom/mma/AddOns/MathLink/DevelopersKits/Linux/MathLinkExamples/reverse 

Program received signal SIGSEGV, Segmentation fault.
0x4008cb57 in __uflow (fp=0x80783c8) at genops.c:328
328	genops.c: No such file or directory.
(gdb) where
#0  0x4008cb57 in __uflow (fp=0x80783c8) at genops.c:328
#1  0x40088e65 in _IO_getline_info (fp=0x80783c8, buf=0xbffff874 "", n=254, 
    delim=10, extract_delim=1, eof=0x0) at iogetline.c:67
#2  0x40088e16 in _IO_getline (fp=0x80783c8, buf=0xbffff874 "", n=254, 
    delim=10, extract_delim=1) at iogetline.c:39
#3  0x40088610 in _IO_fgets (buf=0xbffff874 "", n=255, fp=0x80783c8)
    at iofgets.c:48
#4  0x8069df1 in MLRequest_unix ()
#5  0x804d05d in default_request_argv ()
#6  0x804ce96 in MLRequestArgv ()
#7  0x804bd1f in mlopen_argv ()
#8  0x804bbe2 in MLOpenArgv ()
#9  0x804a6d7 in _MLMain ()
#10 0x804a878 in MLMain ()
#11 0x804a044 in main ()
#12 0x4004f1eb in __libc_start_main (main=0x804a034 <main>, argc=1, 
    argv=0xbffffa74, init=0x8049b20 <_init>, fini=0x80761bc <_fini>, 
    rtld_fini=0x4000a610 <_dl_fini>, stack_end=0xbffffa6c)
    at ../sysdeps/generic/libc-start.c:90


Does anyone know how to fix this?  
Thanks.
-- 
Richard Holcombe


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