From: Gabriel Marcano <gabemarcano@yahoo.com>
To: "cygwin@cygwin.com" <cygwin@cygwin.com>
Subject: cygcheck -svc segfaults on Windows 8.1 with cygwin64
Date: Tue, 19 Nov 2013 05:35:00 -0000 [thread overview]
Message-ID: <1384839303.14356.YahooMailNeo@web125203.mail.ne1.yahoo.com> (raw)
cygcheck -svc causes a segfault on Windows 8.1 on line 1610 of cygcheck.cc, based on gdb output. I'm including some gdb output below that showcases this issue:
1610 strcat (osname, products[prod]);
(gdb) list
1605 if (prod == PRODUCT_UNLICENSED)
1606 strcat (osname, "Unlicensed");
1607 else if (prod > PRODUCT_PROFESSIONAL_WMC)
1608 strcat (osname, "");
1609 else
1610 strcat (osname, products[prod]);
1611 }
1612 else
1613 {
1614 }
(gdb) p prod
$1 = 101
(gdb) p sizeof(products)/sizeof(void*)
$2 = 101
'products[prod]' in this case is accessing memory outside of the 'products' array. The odd thing is that a few lines back, the declaration of products includes 104 elements. I do not know why this discrepancy exists-- anyone have a clue?
So far I've tried installing the experimental release of the cygwin base tools (where I think cygcheck is found), some older version of the base tools, and even just by copying cygcheck from the latest snapshot and replacing the one I had in my /cygwin64/bin folder. None of these alternative versions alleviated the issue (and since the snapshot is stripped of debugging symbols and the symbols I have do not match it, I couldn't debug it, other than the fact it crashed with a segfault with the same output as the other cases).
I have been trying to compile cygwin on my computer, but I have not had much success yet. I will continue to try in the mean time. Thanks in advance for any help!
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next reply other threads:[~2013-11-19 5:35 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-11-19 5:35 Gabriel Marcano [this message]
2013-11-19 10:03 ` Corinna Vinschen
2013-11-19 16:38 ` Warren Young
2013-11-19 17:13 ` Corinna Vinschen
2013-11-19 18:23 ` Charles Wilson
2013-11-19 19:03 ` Corinna Vinschen
2013-11-19 19:21 ` Larry Hall (Cygwin)
2013-11-19 20:30 ` Corinna Vinschen
2013-11-19 20:36 ` Corinna Vinschen
2013-11-19 21:06 ` Andrey Repin
2013-11-19 21:51 ` Corinna Vinschen
2013-11-19 22:34 ` Corinna Vinschen
2013-11-19 23:41 ` Jim Garrison
2013-11-20 8:59 ` Csaba Raduly
2013-11-19 23:08 ` Warren Young
2013-11-20 10:04 ` Corinna Vinschen
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