LinuxQuestions.org - backtrace and backtrace

Hi,

I am attempting to generate stacktraces in a thread using the
system calls backtrace and backtrace_symbols

Code:

#define NUM_STACKFRAMES 50

  void *arr[NUM_STACKFRAMES];

  int nSize = backtrace(arr, NUM_STACKFRAMES);

  char **sym = backtrace_symbols(arr, nSize);

  char nl = '\n';

  int ii;

  for (ii = 0; ii < nSize; ii++) {

    SENDTOLOGS(alog,apstklog,sym[ii]);

    SENDTOLOGS(alog,apstklog, &nl);

  }

  free(sym);

  return ii;

backtrace_symbols is able to find function names in the
library that has the stacktracing code but is unable to find the
function names in any of our other libraries - backtrace has returned the
correct address.

I used the the flags -rdynamic and -fno-omit-frame-pointer to build
our libraries.

Any suggestions for what I might try ?

Code:

lib15.so(_ZN6UIQCtl14ValidateOptionEP11IConnectionP9an_option15an_option_scopePcP15an_option_value+0xb6) [0x2aab5dd9a8]

lib15.so(_ZN20saint_iqthresholdctl14ValidateOptionEP11IConnectionP9an_option15an_option_scopePcP15an_option_value+0x4d) [0x2aab5db13f]

lib16_r.so [0x2a958de1fe]

lib16_r.so [0x2a958df77b]

Tom Bucken(tbucken@sybase.com)