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c++/7183: structs passed by value are corrupted
- From: mark_a_lindner at yahoo dot com
- To: gcc-gnats at gcc dot gnu dot org
- Date: 2 Jul 2002 04:12:53 -0000
- Subject: c++/7183: structs passed by value are corrupted
- Reply-to: mark_a_lindner at yahoo dot com
>Number: 7183
>Category: c++
>Synopsis: structs passed by value are corrupted
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: unassigned
>State: open
>Class: wrong-code
>Submitter-Id: net
>Arrival-Date: Mon Jul 01 21:16:03 PDT 2002
>Closed-Date:
>Last-Modified:
>Originator: mark_a_lindner@yahoo.com
>Release: 3.1
>Organization:
>Environment:
Reading specs from /usr/local/lib/gcc-lib/sparc-sun-solaris2.8/3.1/specs
Configured with: ../configure --with-as=/usr/ccs/bin/as --with-ld=/usr/ccs/bin/ld --disable-nls
Thread model: posix
>Description:
Pass-by-value of a simple struct causes the struct to get corrupted. The attached code, when invoked as described below, produces the following output on my Solaris system:
key = 5
value = 5
now recursing
key = 135536
value = 70104
now recursing
key = 16845391
value = 139112
I have not tested other scenarios (non-template, etc.)
>How-To-Repeat:
instantiate the template as follows:
BugTest<int, int> mytest(5, 5);
>Fix:
Pass-by-reference [ _Datum& key ] appears to solve the problem.
>Release-Note:
>Audit-Trail:
>Unformatted:
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