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Date: Fri, 9 Jul 2004 21:23:16 +0200 (W. Europe Daylight Time)
From: Daniel Lungu <lungu AT nagra DOT com>
To: cygwin AT cygwin DOT com
Subject: FYI: negative error status: gcc vs. cl
Message-ID: <Pine.WNT.4.21.0407092059240.131-100000@pc0197.hq.k.grp>
X-X-Sender: lungu AT castor DOT hq DOT k DOT grp
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII

Igor could be right about (status &= 0xffff), just in case is not masked by
_exit() as for msvcrt exit()

% cat err.c
#include <stdlib.h>

int main(int argc, char **argv)
{
    if (argc == 1)
        return (0);
    exit(strtol(argv[1], NULL, 16));
}

----- b31 = b16 = 0 -----
% err-cl 0x7ffeff5a ; printf "%x\n" $?
5a

----- b16 = 1 -----
% err-cl 0x7ff1ff5a ; printf "%x\n" $?
0

----- b31 = 1 -----
% err-cl 0x8ffeff5a ; printf "%x\n" $?
0

----- havoc with b16 = 1 -----

% err-cl 0x0001105a ; printf "%x\n" $?
Urgent condition on I/O channel
90

% err-cl 0x0001205a ; printf "%x\n" $?
Signal 32
a0

% err-cl 0x0001405a ; printf "%x\n" $?
Signal 64
c0

% err-cl 0x0001305a ; printf "%x\n" $?
Signal 48
b0

% err-cl 0x0001505a ; printf "%x\n" $?
d0

--daniel


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