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Fix merge conflict.

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2004/12/02 23:51:00-08:00 hp.com!davidm
(do_backtrace): Also print the symbol offset.  Increase nesting-level
	tolerance to 64 so we can test programs with deeply nested
	call-chains without triggering spurious warnings.


2004/11/30 22:44:47-08:00 mostang.com!davidm
(do_backtrace): Print IP if unw_get_proc_info() fails.

2004/11/23 18:01:09-08:00 mostang.com!davidm
(do_backtrace): Fix "start_ip might be used uninitialized" warning.

(Logical change 1.290)
This commit is contained in:
hp.com!davidm 2005-05-03 09:13:17 +00:00
parent e02ef902df
commit 95c9a4a21e
1 changed files with 17 additions and 6 deletions
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23
tests/test-ptrace.c
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@ -68,11 +68,12 @@ static struct UPT_info *ui;
void void
do_backtrace (pid_t target_pid) do_backtrace (pid_t target_pid)
{ {
unw_word_t ip, sp, start_ip = 0, off;
int n = 0, ret; int n = 0, ret;
unw_proc_info_t pi; unw_proc_info_t pi;
unw_word_t ip, sp, start_ip;
unw_cursor_t c; unw_cursor_t c;
char buf[512]; char buf[512];
size_t len;
ret = unw_init_remote (&c, as, ui); ret = unw_init_remote (&c, as, ui);
if (ret < 0) if (ret < 0)
@ -89,13 +90,22 @@ do_backtrace (pid_t target_pid)
buf[0] = '\0'; buf[0] = '\0';
if (print_names) if (print_names)
unw_get_proc_name (&c, buf, sizeof (buf), NULL); unw_get_proc_name (&c, buf, sizeof (buf), &off);
if (verbose) if (verbose)
printf ("%016lx %-32s (sp=%016lx)\n", (long) ip, buf, (long) sp); {
if (off)
{
len = strlen (buf);
if (len >= sizeof (buf) - 32)
len = sizeof (buf) - 32;
sprintf (buf + len, "+0x%lx", off);
}
printf ("%016lx %-32s (sp=%016lx)\n", (long) ip, buf, (long) sp);
}
if ((ret = unw_get_proc_info (&c, &pi)) < 0) if ((ret = unw_get_proc_info (&c, &pi)) < 0)
panic ("unw_get_proc_info() failed: ret=%d\n", ret); panic ("unw_get_proc_info(ip=0x%lx) failed: ret=%d\n", (long) ip, ret);
else if (verbose) else if (verbose)
printf ("\tproc=%016lx-%016lx\n\thandler=%lx lsda=%lx", printf ("\tproc=%016lx-%016lx\n\thandler=%lx lsda=%lx",
(long) pi.start_ip, (long) pi.end_ip, (long) pi.start_ip, (long) pi.end_ip,
@ -122,10 +132,11 @@ do_backtrace (pid_t target_pid)
ret, (long) ip, (long) start_ip); ret, (long) ip, (long) start_ip);
} }
if (++n > 32) if (++n > 64)
{ {
/* guard against bad unwind info in old libraries... */ /* guard against bad unwind info in old libraries... */
panic ("too deeply nested---assuming bogus unwind\n"); panic ("too deeply nested---assuming bogus unwind (start ip=%lx)\n",
(long) start_ip);
break; break;
} }
} }