Segfault in libc -- call to malloc from libpng

[Jim Ziegler <jcz@ziplink.net>]

I have a program which uses libpng.  Libpng makes several
calls to malloc.  At some point libc segfaults.

Stack trace:
    0 ... in free      from libc
    1 ... in malloc    from libc
    2 ... in malloc    from libc
    3 ... in pngmalloc at pngmem:405

Code at pngmalloc:pngmem:405
    ret = malloc((size_t)size);

Contents of size: 1729

Part of program trace:

   Compiled with libpng 1.0.5; using libpng 1.0.5.
   Compiled with zlib 1.1.3; using zlib 1.1.3.

        in png_create_write_struct
        in png_set_filter_heuristics
        in png_create_info_struct
        in png_info_init
        in png_init_io
        in IHDR storage function
        in pHYs storage function
        in png_write_info
        in png_write_IHDR
 Writing IHDR chunk (13 bytes)
        in png_write_pHYs
 Writing pHYs chunk (9 bytes)
        in png_set_packing
        in png_set_interlace handling
        in png_write_row (row 0, pass 0)
        in png_write_start_row
 Segmentation fault

Also:
 bash-2.02$ cat /etc/motd
 Linux Linux1 2.2.13 #1 Wed Nov 17 12:47:24 EST 1999 i586 unknown


Any suggestions?



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