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gdb: make 'thread apply all bt' always work on all threads

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even if some appear to have (partially) corrupted stack traces.
E.g. kernel crashdumps typically have stack weirdness at
userland-kernel boundary.

Obtained from:	vendor/upstream (CVS rev 1.118 of stack.c)
Reviewed by:	emaste
Approved by:	jhb
This commit is contained in:
Andriy Gapon 2009-06-12 14:27:50 +00:00
parent 924823491e
commit 84056e4e85
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=194061
1 changed files with 26 additions and 2 deletions
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28
contrib/gdb/gdb/stack.c
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@ -1230,6 +1230,22 @@ backtrace_command_1 (char *count_exp, int show_locals, int from_tty)
printf_filtered ("(More stack frames follow...)\n");
}
struct backtrace_command_args
{
char *count_exp;
int show_locals;
int from_tty;
};
/* Stub to call backtrace_command_1 by way of an error catcher. */
static int
backtrace_command_stub (void *data)
{
struct backtrace_command_args *args = (struct backtrace_command_args *)data;
backtrace_command_1 (args->count_exp, args->show_locals, args->from_tty);
return 0;
}
static void
backtrace_command (char *arg, int from_tty)
{
@ -1237,6 +1253,7 @@ backtrace_command (char *arg, int from_tty)
char **argv = (char **) NULL;
int argIndicatingFullTrace = (-1), totArgLen = 0, argc = 0;
char *argPtr = arg;
struct backtrace_command_args btargs;
if (arg != (char *) NULL)
{
@ -1286,7 +1303,10 @@ backtrace_command (char *arg, int from_tty)
}
}
backtrace_command_1 (argPtr, (argIndicatingFullTrace >= 0), from_tty);
btargs.count_exp = argPtr;
btargs.show_locals = (argIndicatingFullTrace >= 0);
btargs.from_tty = from_tty;
catch_errors (backtrace_command_stub, (char *)&btargs, "", RETURN_MASK_ERROR);
if (argIndicatingFullTrace >= 0 && totArgLen > 0)
xfree (argPtr);
@ -1299,7 +1319,11 @@ static void backtrace_full_command (char *arg, int from_tty);
static void
backtrace_full_command (char *arg, int from_tty)
{
backtrace_command_1 (arg, 1, from_tty);
struct backtrace_command_args btargs;
btargs.count_exp = arg;
btargs.show_locals = 1;
btargs.from_tty = from_tty;
catch_errors (backtrace_command_stub, (char *)&btargs, "", RETURN_MASK_ERROR);
}