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From: "marc.glisse at normalesup dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/53017] New: Integer constant not constant enough for vector_size
Date: Tue, 17 Apr 2012 11:15:00 -0000	[thread overview]
Message-ID: <bug-53017-4@http.gcc.gnu.org/bugzilla/> (raw)

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53017

             Bug #: 53017
           Summary: Integer constant not constant enough for vector_size
    Classification: Unclassified
           Product: gcc
           Version: 4.8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: marc.glisse@normalesup.org


In the following code, s is apparently not an acceptable parameter for the
vector_size attribute, but s+0 is.

constexpr int s=32;
typedef double VEC __attribute__ ((__vector_size__ (s
#ifndef BUG
        + 0
#endif
        )));

VEC a={2.,3.,4.};



$ g++ -std=c++0x v.cc -Wall -W -c -O3 
$ g++ -std=c++0x v.cc -Wall -W -c -O3 -DBUG
v.cc:6:4: warning: '__vector_size__' attribute ignored [-Wattributes]
v.cc:8:16: error: scalar object 'a' requires one element in initializer


             reply	other threads:[~2012-04-17 11:15 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-04-17 11:15 marc.glisse at normalesup dot org [this message]
2012-04-17 11:25 ` [Bug c++/53017] " rguenth at gcc dot gnu.org
2014-02-03 19:08 ` [Bug c++/53017] Integer constant expression " glisse at gcc dot gnu.org
2014-02-03 19:10 ` glisse at gcc dot gnu.org
2015-03-25 19:51 ` paolo.carlini at oracle dot com

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