Parse error in expression new (int*)[10]

["James KANZE" <jkanze at caicheuvreux dot com>]

The following (illegal) program compiles with g++ 3.1:

-----------------------------------------
#include <iostream>
#include <typeinfo>

void
f()
{
    int** ppi = new (int*)[ 10 ] ;
}

int
main()
{
    std::cout << typeid( new (int*)[10] ).name() << '\n' ;
    return 0 ;
}
-----------------------------------------

There should be a type error on the line in the function f.  The output
from the typeid in main indicates that g++ is somehow interpreting this
as if the parentheses weren't there in the new expression.

Here's the protocol from compiling the code with -v, and then executing
it:

-----------------------------------------
054@~/tmp/gcc3 (19): g++3 -v bad.cc -o bad
Remading specs from /home/team02/jakan/gnu/bin/../lib/gcc-lib/sparc-sun-solaris2.8/3.1/specs
Configured with: ./configure --previx ../..
Thread model: posix
gcc version 3.1
 /home/team02/jakan/gnu/bin/../lib/gcc-lib/sparc-sun-solaris2.8/3.1/cc1plus -v -iprefix
/home/team02/jakan/gnu/bin/../lib/gcc-lib/sparc-sun-solaris2.8/3.1/ -D__GNUC__=3 -D__GNUC_MINOR__=1 -D__GNUC_PATCHLEVEL__=0 -Dsparc -Dsun -Dunix
-D__svr4__ -D__SVR4 -D__PRAGMA_REDEFINE_EXTNAME -D__sparc__ -D__sun__ -D__unix__ -D__svr4__ -D__SVR4 -D__PRAGMA_REDEFINE_EXTNAME -D__sparc -D__sun
-D__unix -Asystem=unix -Asystem=svr4 -D__NO_INLINE__ -D__STDC_HOSTED__=1 -D_XOPEN_SOURCE=500 -D_LARGEFILE_SOURCE=1 -D_LARGEFILE64_SOURCE=1
-D__EXTENSIONS__ -D__SIZE_TYPE__=unsigned int -D__PTRDIFF_TYPE__=int -D__WCHAR_TYPE__=long int -D__WINT_TYPE__=long int -D__GCC_NEW_VARARGS__
-Acpu=sparc -Amachine=sparc bad.cc -D__GNUG__=3 -D__DEPRECATED -D__EXCEPTIONS -D__GXX_ABI_VERSION=100 -quiet -dumpbase bad.cc -version -o
/var/tmp//cckasQOm.s
GNU CPP version 3.1 (cpplib) (sparc ELF)
GNU C++ version 3.1 (sparc-sun-solaris2.8)
      compiled by GNU C version 3.1.
ignoring nonexistent directory "/home/team02/jakan/gnu/sparc-sun-solaris2.8/include"
ignoring nonexistent directory "/usr/local/include"
ignoring nonexistent directory "/home/team02/jakan/gnu/sparc-sun-solaris2.8/include"
ignoring duplicate directory "/home/team02/jakan/gnu/include/g++-v3"
ignoring duplicate directory "/home/team02/jakan/gnu/include/g++-v3/sparc-sun-solaris2.8"
ignoring duplicate directory "/home/team02/jakan/gnu/include/g++-v3/backward"
ignoring duplicate directory "/home/team02/jakan/gnu/lib/gcc-lib/sparc-sun-solaris2.8/3.1/include"
#include "..." search starts here:
#include <...> search starts here:
 /home/team02/jakan/gnu/include/g++-v3
 /home/team02/jakan/gnu/include/g++-v3/sparc-sun-solaris2.8
 /home/team02/jakan/gnu/include/g++-v3/backward
 /home/team02/jakan/gnu/lib/gcc-lib/sparc-sun-solaris2.8/3.1/include
 /home/team02/jakan/gnu/include
 /usr/include
End of search list.
 /usr/ccs/bin/as -V -Qy -s -o /var/tmp//cclWR6bn.o /var/tmp//cckasQOm.s
/usr/ccs/bin/as: Sun WorkShop 6 99/08/18
 /home/team02/jakan/gnu/bin/../lib/gcc-lib/sparc-sun-solaris2.8/3.1/collect2 -V -Y P,/usr/ccs/lib:/usr/lib -Qy -o bad
/home/team02/jakan/gnu/bin/../lib/gcc-lib/sparc-sun-solaris2.8/3.1/crt1.o /home/team02/jakan/gnu/bin/../lib/gcc-lib/sparc-sun-solaris2.8/3.1/crti.o
/usr/ccs/lib/values-Xa.o /home/team02/jakan/gnu/bin/../lib/gcc-lib/sparc-sun-solaris2.8/3.1/crtbegin.o
-L/home/team02/jakan/gnu/bin/../lib/gcc-lib/sparc-sun-solaris2.8/3.1 -L/home/team02/jakan/gnu/bin/../lib/gcc-lib -L/usr/ccs/bin -L/usr/ccs/lib
-L/home/team02/jakan/gnu/bin/../lib/gcc-lib/sparc-sun-solaris2.8/3.1/../../.. /var/tmp//cclWR6bn.o -lstdc++ -lm -lgcc_s -lgcc -lc -lgcc_s -lgcc -lc
/home/team02/jakan/gnu/bin/../lib/gcc-lib/sparc-sun-solaris2.8/3.1/crtend.o /home/team02/jakan/gnu/bin/../lib/gcc-lib/sparc-sun-solaris2.8/3.1/crtn.o
ld: Solaris Link Editors: 5.8-1.272
054@~/tmp/gcc3 (20): bad
PPi
-----------------------------------------

--
James Kanze                           mailto:jkanze@caicheuvreux.com
Conseils en informatique orientée objet/
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