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From: loewis@informatik.hu-berlin.de
To: gcc-gnats@gcc.gnu.org
Subject: c++/7435: g++ rejects certain integral constant expressions
Date: Mon, 29 Jul 2002 09:26:00 -0000 [thread overview]
Message-ID: <200207291623.g6TGNFtE014027@paros.informatik.hu-berlin.de> (raw)
>Number: 7435
>Category: c++
>Synopsis: g++ rejects certain integral constant expressions
>Confidential: no
>Severity: non-critical
>Priority: low
>Responsible: unassigned
>State: open
>Class: rejects-legal
>Submitter-Id: net
>Arrival-Date: Mon Jul 29 09:26:00 PDT 2002
>Closed-Date:
>Last-Modified:
>Originator: loewis@informatik.hu-berlin.de (Martin v. Loewis)
>Release: 3.1
>Organization:
>Environment:
System: SunOS paros 5.9 Generic sun4u sparc SUNW,Sun-Blade-1000
Architecture: sun4
host: sparc-sun-solaris2.8
build: sparc-sun-solaris2.8
target: sparc-sun-solaris2.8
configured with: ../configure --host=sparc-sun-solaris2.8 --enable-shared --enable-threads --with-cpu=v8 --with-gnu-ld --with-gnu-as --enable-version-specific-runtime-libs
>Description:
g++ -pedantic rejects the translation unit
int x[true?(4,5):2];
with the error message
a.cc:1: warning: ISO C++ forbids variable-size array `x'
a.cc:1: variable-size type declared outside of any function
This is incorrect; according to 5.19, a constant-expression is
a conditional-expression. According to 5.16, the syntax allows
logical-or-expression ? expression : assignment-expression
Since this expression does not violate any of the other constraints
for an integral constant expression, it should be accepted.
>How-To-Repeat:
Compile the included program with 'g++ -pedantic'
>Fix:
Work-around: simplify the expression.
>Release-Note:
>Audit-Trail:
>Unformatted:
next reply other threads:[~2002-07-29 16:26 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-07-29 9:26 loewis [this message]
2002-09-13 16:39 nathan
2002-09-17 10:56 Martin Sebor
2003-01-28 16:50 bangerth
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