Re: c++/9907: [3.4 regression] sizeof considered as non constant

Re: c++/9907: [3.4 regression] sizeof considered as non constant

[bangerth]

Synopsis: [3.4 regression] sizeof considered as non constant

State-Changed-From-To: open->analyzed
State-Changed-By: bangerth
State-Changed-When: Mon Mar  3 14:49:14 2003
State-Changed-Why:
    Confirmed, a regression on mainline. I think that this is a 
    duplicate of some other high-pri regression, but can't seem
    to find it right now. That one was extracted from BOOST,
    which uses the style of programming used here as well quite
    extensively. I think this should really be fixed before any
    release.
    
    W.

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=9907

Re: c++/9907: [3.4 regression] sizeof considered as non constant

[nathan]

Synopsis: [3.4 regression] sizeof considered as non constant

Responsible-Changed-From-To: nathan->unassigned
Responsible-Changed-By: nathan
Responsible-Changed-When: Tue Mar 25 10:05:16 2003
Responsible-Changed-Why:
    This turns out to be hard to fix right now. We have to get the value-dependent expression machinery right first.

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=9907

Re: c++/9907: [3.4 regression] sizeof considered as non constant

[nathan]

Synopsis: [3.4 regression] sizeof considered as non constant

Responsible-Changed-From-To: unassigned->nathan
Responsible-Changed-By: nathan
Responsible-Changed-When: Fri Mar 21 12:16:39 2003
Responsible-Changed-Why:
    ok, looks similar to 9978

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=9907

c++/9907: [3.4 regression] sizeof considered as non constant

[nes]

>Number:         9907
>Category:       c++
>Synopsis:       [3.4 regression] sizeof considered as non constant
>Confidential:   no
>Severity:       critical
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          rejects-legal
>Submitter-Id:   net
>Arrival-Date:   Sun Mar 02 22:36:00 UTC 2003
>Closed-Date:
>Last-Modified:
>Originator:     Nicolas Burrus
>Release:        3.4 20030302 (experimental)
>Organization:
LRDE
>Environment:
System: Linux meissa 2.4.20 #1 Wed Dec 4 21:05:57 CET 2002 i686 unknown unknown GNU/Linux
Architecture: i686

	
host: i686-pc-linux-gnu
build: i686-pc-linux-gnu
target: i686-pc-linux-gnu
configured with: /home/nes/work/ext/gcc/configure --prefix=/opt/gcc-3.4-cvs --enable-languages=c,c++
>Description:
	Using sizeof(function) in a template function is considered non constant.
>How-To-Repeat:
	Try to compile this code : 

	template <unsigned n> struct bar {};

	int foo();

	template <class T>
	void baz()
	{
	  bar<sizeof(foo())> b;
	}

	Here is the output of g++ 3.4 : 

	foo.cc: In function `void baz()':
	foo.cc:18: error: non-constant `sizeof ((*foo()()))' cannot be used as template 

	If baz() is not template, it works.

>Fix:
	No fix found.
>Release-Note:
>Audit-Trail:
>Unformatted: