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From: "markus dot heichel at comsoft dot de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug ada/29320] New: Segfault and strange behaviour related to "use" clauses
Date: Mon, 02 Oct 2006 12:05:00 -0000 [thread overview]
Message-ID: <bug-29320-12295@http.gcc.gnu.org/bugzilla/> (raw)
GCC seems to have more problems with "use" clauses (see also bug #26529).
gcc: Internal error: Segmentation fault (program gnat1)
The compiler has been compiled from source by:
> configure --prefix=/opt/gcc-4.1.1 --enable-languages=ada,c
> make bootstrap
> make install
The problem can be reproduced by compiling the source file below, using the
following command line:
gcc -c command.ads
The solution of the problem in this case is to use the correct range 0..6 for
INFO_T.COMMAND_NAME, but gcc should have printed an error message instead of
crashing, shouldn't it?
The compiler does not crash when size 8 is used for COMMAND_KIND_T, but how are
the enum values represented in COMMAND_NAME in this case?
command.ads
=======================================================
package COMMAND is
type COMMAND_KIND_T is (START, STOP);
for COMMAND_KIND_T use (START => 80, STOP => 81);
-- for COMMAND_KIND_T'size use 8; -- not crashing
for COMMAND_KIND_T'size use 16; -- crashing
type SUB_COMMAND_KIND_T is new COMMAND_KIND_T range START..STOP;
for SUB_COMMAND_KIND_T'size use 7;
type INFO_T (COMMAND_NAME : SUB_COMMAND_KIND_T := START) is record
case COMMAND_NAME is
when others => null;
end case;
end record;
for INFO_T use record
COMMAND_NAME at 0 range 0..4;
end record;
end COMMAND;
=======================================================
--
Summary: Segfault and strange behaviour related to "use" clauses
Product: gcc
Version: 4.1.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: ada
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: markus dot heichel at comsoft dot de
GCC build triplet: i686-pc-linux
GCC host triplet: i686-pc-linux
GCC target triplet: i686-pc-linux
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29320
next reply other threads:[~2006-10-02 12:05 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-10-02 12:05 markus dot heichel at comsoft dot de [this message]
2006-10-04 17:56 ` [Bug ada/29320] [Ada] gnat1 segfault related to "use" representation clauses laurent at guerby dot net
2008-04-12 16:25 ` sam at gcc dot gnu dot org
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