Date: Thu, 17 Jan 2008 18:18:35 GMT From: John Baldwin <jhb@FreeBSD.org> To: Perforce Change Reviews <perforce@freebsd.org> Subject: PERFORCE change 133485 for review Message-ID: <200801171818.m0HIIZnF015129@repoman.freebsd.org>
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http://perforce.freebsd.org/chv.cgi?CH=133485 Change 133485 by jhb@jhb_mutex on 2008/01/17 18:18:04 Outsmart gcc so that we still exhaust the stack. Affected files ... .. //depot/projects/smpng/sys/modules/crash/crash.c#41 edit Differences ... ==== //depot/projects/smpng/sys/modules/crash/crash.c#41 (text+ko) ==== @@ -751,12 +751,25 @@ test_witness_order_funcs); #endif +static int blow_stack(void); + static int +eat_stack(void) +{ + u_int32_t dummy[128]; + + dummy[0] = arc4random(); + dummy[0] += blow_stack(); + return (dummy[0]); +} + +static int blow_stack(void) { - char dummy[512]; + u_int32_t dummy[128]; - dummy[0] += blow_stack(); + dummy[0] = arc4random(); + dummy[0] += eat_stack(); return (dummy[0]); }
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