Variable declaration interpreted as function?

[Lars Albertsson <lalle at sics dot se>]

The following piece of code looks legal to me, but is refused. Gcc
2.95.2 gives a more comprehensive error message, perhaps indicating
that the declaration of c is interpreted as a function declaration.

/Lalle


ugluk:/tmp/build/test> cat ~/src/test/declaration.cc 

class A
{
public:
  A();
};


class B
{
public:
  B(const A &);
  
};

class C 
{
public:
  C(const B & );

};

void f(const C &);

void
f2()
{
  C c(B(A()));
  f(c);
}
ugluk:/tmp/build/test> /opt/gcc-20000517/bin/g++ -v ~/src/test/declaration.cc 
Reading specs from /opt/gcc-20000517/bin/../lib/gcc-lib/i386-pc-linux-gnu/2.96/specs
gcc version 2.96 20000517 (experimental)
 /opt/gcc-20000517/bin/../lib/gcc-lib/i386-pc-linux-gnu/2.96/cpp -lang-c++ -v -iprefix /opt/gcc-20000517/bin/../lib/gcc-lib/i386-pc-linux-gnu/2.96/ -D__GNUC__=2 -D__GNUG__=2 -D__GNUC_MINOR__=96 -D__GNUC_PATCHLEVEL__=0 -D__cplusplus -D__ELF__ -Dunix -Dlinux -D__ELF__ -D__unix__ -D__linux__ -D__unix -D__linux -Asystem(posix) -D__EXCEPTIONS -Acpu(i386) -Amachine(i386) -Di386 -D__i386 -D__i386__ -D__tune_i386__ /home/lalle/src/test/declaration.cc /tmp/cctBY7RW.ii
GNU CPP version 2.96 20000517 (experimental) (cpplib)
 (i386 Linux/ELF)
ignoring nonexistent directory `/tmp/gcc-20000517-root/usr/local/include/g++-3'
ignoring nonexistent directory `/tmp/gcc-20000517-root/usr/local/lib/gcc-lib/i386-pc-linux-gnu/2.96/include'
ignoring nonexistent directory `/tmp/gcc-20000517-root/usr/local/i386-pc-linux-gnu/include'
#include "..." search starts here:
#include <...> search starts here:
 /opt/gcc-20000517/include/g++-3
 /opt/gcc-20000517/lib/gcc-lib/i386-pc-linux-gnu/2.96/include
 /opt/gcc-20000517/i386-pc-linux-gnu/include
 /usr/local/include
 /usr/include
End of search list.
 /opt/gcc-20000517/bin/../lib/gcc-lib/i386-pc-linux-gnu/2.96/cc1plus /tmp/cctBY7RW.ii -quiet -dumpbase declaration.cc -version -o /tmp/ccOtm5hJ.s
GNU C++ version 2.96 20000517 (experimental) (i386-pc-linux-gnu) compiled by GNU C version 2.96 20000517 (experimental).
/home/lalle/src/test/declaration.cc: In function `void f2 ()':
/home/lalle/src/test/declaration.cc:29: could not convert `c' to `const
C &'
/home/lalle/src/test/declaration.cc:23: in passing argument 1 of `f
(const C &)'
ugluk:/tmp/build/test> /opt/gcc-2.95.2/bin/g++ -v ~/src/test/declaration.cc 
Reading specs from /opt/gcc-2.95.2/lib/gcc-lib/i686-pc-linux-gnu/2.95.2/specs
gcc version 2.95.2 19991024 (release)
 /opt/gcc-2.95.2/lib/gcc-lib/i686-pc-linux-gnu/2.95.2/cpp -lang-c++ -v -D__GNUC__=2 -D__GNUG__=2 -D__GNUC_MINOR__=95 -D__cplusplus -D__ELF__ -Dunix -D__i386__ -Dlinux -D__ELF__ -D__unix__ -D__i386__ -D__linux__ -D__unix -D__linux -Asystem(posix) -D__EXCEPTIONS -Acpu(i386) -Amachine(i386) -Di386 -D__i386 -D__i386__ -Di686 -Dpentiumpro -D__i686 -D__i686__ -D__pentiumpro -D__pentiumpro__ /home/lalle/src/test/declaration.cc /tmp/ccHsnuw7.ii
GNU CPP version 2.95.2 19991024 (release) (i386 Linux/ELF)
#include "..." search starts here:
#include <...> search starts here:
 /opt/gcc-2.95.2/lib/gcc-lib/i686-pc-linux-gnu/2.95.2/../../../../include/g++-3
 /usr/local/include
 /opt/gcc-2.95.2/lib/gcc-lib/i686-pc-linux-gnu/2.95.2/../../../../i686-pc-linux-gnu/include
 /opt/gcc-2.95.2/lib/gcc-lib/i686-pc-linux-gnu/2.95.2/include
 /usr/include
End of search list.
The following default directories have been omitted from the search path:
End of omitted list.
 /opt/gcc-2.95.2/lib/gcc-lib/i686-pc-linux-gnu/2.95.2/cc1plus /tmp/ccHsnuw7.ii -quiet -dumpbase declaration.cc -version -o /tmp/ccOxYOG7.s
GNU C++ version 2.95.2 19991024 (release) (i686-pc-linux-gnu) compiled by GNU C version 2.95.2 19991024 (release).
/home/lalle/src/test/declaration.cc: In function `void f2()':
/home/lalle/src/test/declaration.cc:29: conversion from `C (*)(B (*)())' to non-scalar type `C' requested
/home/lalle/src/test/declaration.cc:23: in passing argument 1 of `f(const C &)'
ugluk:/tmp/build/test> uname -a
Linux ugluk.sics.se 2.2.14-6.1.1 #6 Wed May 10 19:49:52 CEST 2000 i686 unknown