on_error_query

Prompts the user with `[E]xit, [H]alt, show [S]tack trace or [P]roceed`.

This function is intended to be used for debugging use only. The following example shows how it can be used together with the log functions.

#include <glib.h>

static void
log_handler (const gchar   *log_domain,
             GLogLevelFlags log_level,
             const gchar   *message,
             gpointer       user_data)
{
  g_log_default_handler (log_domain, log_level, message, user_data);

  g_on_error_query (MY_PROGRAM_NAME);
}

int
main (int argc, char *argv[])
{
  g_log_set_handler (MY_LOG_DOMAIN,
                     G_LOG_LEVEL_WARNING |
                     G_LOG_LEVEL_ERROR |
                     G_LOG_LEVEL_CRITICAL,
                     log_handler,
                     NULL);
  ...

If "[E]xit" is selected, the application terminates with a call to _exit(0).

If "[S]tack" trace is selected, on_error_stack_trace is called. This invokes gdb, which attaches to the current process and shows a stack trace. The prompt is then shown again.

If "[P]roceed" is selected, the function returns.

This function may cause different actions on non-UNIX platforms.

On Windows consider using the `G_DEBUGGER` environment variable (see [Running GLib Applications](glib-running.html)) and calling on_error_stack_trace instead.

Parameters:

prg_name

the program name, needed by gdb for the "[S]tack trace" option. If prg_name is null, get_prgname is called to get the program name (which will work correctly if gdk_init or gtk_init has been called)