Re: c++/5805: [parser] the expression 'new (int*)[10]' should be a syntax error

Re: c++/5805: [parser] the expression 'new (int*)[10]' should be a syntax error

[Moritz Franosch]

The following reply was made to PR c++/5805; it has been noted by GNATS.

From: Moritz Franosch <jfranosc@physik.tu-muenchen.de>
To: rodrigc@gcc.gnu.org, gcc-bugs@gcc.gnu.org, gcc-prs@gcc.gnu.org,
   gcc-gnats@gcc.gnu.org
Cc:  
Subject: Re: c++/5805: [parser] the expression 'new (int*)[10]' should be a syntax error
Date: 06 Mar 2002 11:28:03 +0100

 rodrigc@gcc.gnu.org writes:
 
 > Old Synopsis: the expression 'new (int*)[10]' should be a syntax error
 > New Synopsis: [parser] the expression 'new (int*)[10]' should be a syntax error
 > 
 > State-Changed-From-To: closed->analyzed
 > State-Changed-By: rodrigc
 > State-Changed-When: Tue Mar  5 18:45:52 2002
 > State-Changed-Why:
 >     For the following testcase, bug.c:
 >     int main() {
 >       int** p;
 >       p = new int* [10];
 >       p = new (int*) [10];
 >     }
 >     
 >     If compiled with:
 >     g++ bug.cc                ->  NO ERROR
 >     
 >     If compiled with
 >     g++ -pedantic-errors bug.cc
 >     bug.cc:ISO C++ forbids array dimensions with parenthesized type in new
 >     
 >     
 >     This is apparently a gcc extension.
 
 Sorry, I didn't think it could be an extension (although the behaviour
 of g++ in this case seemed logical to me and I've always used it),
 will better use '-pedantic' in the future.
 
 So Intel C++ 5.0.4 didn't get it right (if compiled with -ansi Intel reports
 an error instead of a warning, but the error is still the wrong
 error), but g++ did. Very good, g++-team!
 
 Thank you for your support.
 
 Moritz

Re: c++/5805: [parser] the expression 'new (int*)[10]' should be a syntax error

[mmitchel]

Synopsis: [parser] the expression 'new (int*)[10]' should be a syntax error

State-Changed-From-To: analyzed->closed
State-Changed-By: mmitchel
State-Changed-When: Thu Jan 23 07:13:03 2003
State-Changed-Why:
    This G++ extension has been removed in GCC 3.4.

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=5805

Re: c++/5805: [parser] the expression 'new (int*)[10]' should be a syntax error

[rodrigc]

Old Synopsis: the expression 'new (int*)[10]' should be a syntax error
New Synopsis: [parser] the expression 'new (int*)[10]' should be a syntax error

State-Changed-From-To: closed->analyzed
State-Changed-By: rodrigc
State-Changed-When: Tue Mar  5 18:45:52 2002
State-Changed-Why:
    For the following testcase, bug.c:
    int main() {
      int** p;
      p = new int* [10];
      p = new (int*) [10];
    }
    
    If compiled with:
    g++ bug.cc                ->  NO ERROR
    
    If compiled with
    g++ -pedantic-errors bug.cc
    bug.cc:ISO C++ forbids array dimensions with parenthesized type in new
    
    
    This is apparently a gcc extension.
    In parse.y,
    
           /* GNU extension to allow arrays of arbitrary types with
               non-constant dimension.  */
            | '(' type_id ')' '[' expr ']'
                    {
                      if (pedantic)
                        pedwarn ("ISO C++ forbids array dimensions with parenthesized type in new");
                      $$.t = build_nt (ARRAY_REF, TREE_VALUE ($2.t), $5);
                      $$.t = build_tree_list (TREE_PURPOSE ($2.t), $$.t);
                      $$.new_type_flag = $2.new_type_flag;
                    }
    
    
    According to Paolo, the new C++ parser produces the
    following error:
    bug.cc:4: expected `;'
     

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=5805