PA64 shared library problems with gdb-5.2 (hpux)

[ross.alexander@uk.neceur.com]

I'm trying to debug PA64 program with relies on shared libraries.
I keep getting problems with pa64_solib_add.  I have created a simple
program with uses dlopen to show the problem.

#include <stdlib.h>
#include <stdio.h>
#include <dlfcn.h>

int main(int argc, char *argv[])
{
  void *v;
  int i, count;
  void **handle;

  if (argc < 2)
  {
    printf("%s: <filename>\n", argv[0]);
  }
  handle = calloc(sizeof(void*), argc);

  for (i = 1; i < argc; i++)
    {
      if ((handle[count] = dlopen(argv[i], RTLD_GLOBAL|RTLD_NOW)) == NULL)
        printf("dlopen: %s\n", dlerror());
      else
      count++;
    }

  struct load_module_desc mod;
  for (i = -1; ; i++)
    {
      if (dlget(i, &mod, sizeof(mod)))
      {
        char *name = dlgetname(&mod, sizeof(mod), NULL, 0, 0);
        printf("Have index %d %s\n", i, name ? name : "<No name>");
      }
      else
      break;
    }
  printf("\n");

  for (i = 1; ; i++)
    {
      if (dlgetmodinfo(i, &mod, sizeof(mod), NULL, 0, 0)
      {
        char *name = dlgetname(&mod, sizeof(mod), NULL, 0, 0);
        printf("Have index %d %s\n", i, name ? name : "<No name>");
      }
      else
      break;
    }

  for (i = 0; i < count; i++)
    dlclose(handle[i]);

  return 0;
}

./dltest /usr/lib/pa20_64/libm.2

Have index -1 /usr/lib/pa20_64/dld.sl
Have index 0 ./dltest
Have index 1 /lib/pa20_64/libdl.1
Have index 2 /lib/pa20_64/libc.2
Have index 3 /usr/lib/pa20_64/libm.2

Have index 1 /lib/pa20_64/libdl.1
Have index 2 /lib/pa20_64/libc.2
Have index 3 /usr/lib/pa20_64/libm.2

GNU gdb 5.2
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This GDB was configured as "hppa64-hp-hpux11.00"...
(gdb) run /usr/pa20_64/libm.2
Starting program: /home/ralexand/dltest/dltest /usr/pa20_64/libm.2
dlopen: Unable to find library '/usr/pa20_64/libm.2'.
Have index -1 /usr/lib/pa20_64/dld.sl
Have index 0 /home/ralexand/dltest/dltest
Have index 1 /lib/pa20_64/libdl.1
Have index 2 /lib/pa20_64/libc.2

Have index 1 /lib/pa20_64/libdl.1
Have index 2 /lib/pa20_64/libc.2

Program exited normally.
(gdb) run /usr/lib/pa20_64/libm.2
Starting program: /home/ralexand/dltest/dltest /usr/lib/pa20_64/libm.2
pa64_solib_add, unable to read shared library path.
(gdb) cont
Continuing.
pa64_solib_add, unable to read shared library path.
(gdb)
Continuing.
Have index -1 /usr/lib/pa20_64/dld.sl
Have index 0 /home/ralexand/dltest/dltest
Have index 1 /lib/pa20_64/libdl.1
Have index 2 /lib/pa20_64/libc.2
Have index 3 /usr/lib/pa20_64/libm.2

Have index 1 /lib/pa20_64/libdl.1
Have index 2 /lib/pa20_64/libc.2
Have index 3 /usr/lib/pa20_64/libm.2

Program exited normally.
(gdb) quit

I'm also getting some "found in psymtab but not in symtab" errors, but
they are very difficult to duplicate.  I noticed a while back H.J Lu was
reporting something very similar.  One thing at a time though.

Cheers,

Ross

---------------------------------------------------------------------------------

Ross Alexander                           "He knows no more about his
MIS - NEC Europe Limited            destiny than a tea leaf knows
Work ph: +44 20 8752 3394         the history of East India Company"