g++ 4.0.1 gives incorrect error message with void function declaration &
implementation when using void main(). This can be demonstrated with the
following program:
------
void f1();
void main()
{
f1();
}
void f1()
{
}
----
The resulting error message is:
gccbug.cc:3: error: '::main' must return 'int'
gccbug.cc: In function 'void f1()':
gccbug.cc:8: error: new declaration 'void f1()'
gccbug.cc:1: error: ambiguates old declaration 'int f1()'
Granted, using void for return value of main() is an error, but so is the
resulting message.
The error message is correct with gcc 3.3.5 and 3.4.4 (debian prerelease).
Since "Reporting bugs" web page requested the environment,
gcc -v gives:
Using built-in specs.
Target: i486-linux-gnu
Configured with: ../src/configure -v
--enable-languages=c,c++,java,f95,objc,ada,treelang --prefix=/usr
--enable-shared --with-system-zlib --libexecdir=/usr/lib --enable-nls
--without-included-gettext --enable-threads=posix --program-suffix=-4.0
--enable-__cxa_atexit --enable-libstdcxx-allocator=mt --enable-clocale=gnu
--enable-libstdcxx-debug --enable-java-gc=boehm --enable-java-awt=gtk
--with-java-home=/usr/lib/jvm/java-1.4.2-gcj-4.0-1.4.2.0/jre --enable-mpfr
--disable-werror --enable-checking=release i486-linux-gnu
Thread model: posix
gcc version 4.0.1 (Debian 4.0.1-2)
system:
Linux maestro 2.6.12.1 #1 SMP Sun Jun 26 16:24:58 EEST 2005 i686 GNU/Linux
--
Summary: g++ gives incorrect error message with void main() and a
void function
Product: gcc
Version: 4.0.1
Status: UNCONFIRMED
Severity: minor
Priority: P2
Component: c++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: pvuorela at iki dot fi
CC: gcc-bugs at gcc dot gnu dot org
GCC target triplet: i486-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23229
