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c/5091: variables qualified volatile of type va_list will cause a segmentation fault
- From: maierkom at rcs dot ei dot tum dot de
- To: gcc-gnats at gcc dot gnu dot org
- Date: 12 Dec 2001 08:21:27 -0000
- Subject: c/5091: variables qualified volatile of type va_list will cause a segmentation fault
- Reply-to: maierkom at rcs dot ei dot tum dot de
>Number: 5091
>Category: c
>Synopsis: variables qualified volatile of type va_list will cause a segmentation fault
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: unassigned
>State: open
>Class: wrong-code
>Submitter-Id: net
>Arrival-Date: Wed Dec 12 00:26:00 PST 2001
>Closed-Date:
>Last-Modified:
>Originator: Thomas Maier-Komor
>Release: 3.0.0, 3.0.1, 3.0.2
>Organization:
>Environment:
Linux 2.4
>Description:
if one qulifies a variable of type va_list (#include <stdarg.h>) with volatile the program will crash. The variable will own an incorrect address (not on the stack).
This happens with all recent gcc 3.x versions - but not with
the older 2.95.x series
>How-To-Repeat:
The attached file is just a copy of the man page example with volatile inserted. just: compile - run - bang...
>Fix:
Workaround: do not use volatile - but I can't as the code, which I would like to get compiled is automatically generated... So a fix in 3.0.3 would be very helpful. Thanks.
>Release-Note:
>Audit-Trail:
>Unformatted:
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