[COFF] [TUHS] Re: Conditions, AKA exceptions. (Was: I can't drive 55: "GOTO considered harmful" 55th anniversary)
Larry McVoy
lm at mcvoy.com
Sat Mar 11 03:42:22 AEST 2023
On Fri, Mar 10, 2023 at 09:35:44AM -0800, Bakul Shah wrote:
> During development the runtime should simply invoke a debugger in this case. This should be perfectly doable but for some reason it is considered acceptable to crash a program! I don???t want to run a program *under a debugger* but want it invoked at the right time!
Indeed.
void
gdb_backtrace(void)
{
FILE *f;
char *cmd;
unless (getenv("_BK_BACKTRACE")) return;
unless ((f = efopen("BK_TTYPRINTF")) ||
(f = fopen(DEV_TTY, "w"))) {
f = stderr;
}
cmd = aprintf("gdb -batch -ex backtrace '%s/bk' %u 1>&%d 2>&%d",
bin, getpid(), fileno(f), fileno(f));
system(cmd);
free(cmd);
if (f != stderr) fclose(f);
}
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