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Fix debug output of wait4 result (was reusing buf[] on unknown events)

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Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
This commit is contained in:
Denys Vlasenko 2013-06-21 16:41:50 +02:00
parent 4e020c0f4b
commit 1b2bfbc825
1 changed files with 3 additions and 7 deletions
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10
strace.c
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@ -2001,7 +2001,7 @@ trace(void)
event = ((unsigned)status >> 16);
if (debug_flag) {
char buf[sizeof("WIFEXITED,exitcode=%u") + sizeof(int)*3 /*paranoia:*/ + 16];
char evbuf[sizeof(",PTRACE_EVENT_?? (%u)") + sizeof(int)*3 /*paranoia:*/ + 16];
char evbuf[sizeof(",EVENT_VFORK_DONE (%u)") + sizeof(int)*3 /*paranoia:*/ + 16];
strcpy(buf, "???");
if (WIFSIGNALED(status))
#ifdef WCOREDUMP
@ -2031,16 +2031,12 @@ trace(void)
[PTRACE_EVENT_EXIT] = "EXIT",
/* [PTRACE_EVENT_STOP (=128)] would make biggish array */
};
const char *e;
const char *e = "??";
if (event < ARRAY_SIZE(event_names))
e = event_names[event];
else if (event == PTRACE_EVENT_STOP)
e = "STOP";
else {
sprintf(buf, "?? (%u)", event);
e = buf;
}
sprintf(evbuf, ",PTRACE_EVENT_%s", e);
sprintf(evbuf, ",EVENT_%s (%u)", e, event);
}
fprintf(stderr, " [wait(0x%04x) = %u] %s%s\n", status, pid, buf, evbuf);
}