string literal conversion problem

[Jack Marr <marr@xxxxxxx>]

We are getting an error with g++ 3.3.3 when passing a string literal to 
a function expecting a void *.  The error is seen here:

% cat strlit-to-void-ptr.c

extern void setValue(void * value);

int main(void)
{
         setValue("String 1");

         char * s2 = "String 2";
         setValue(s2);

         return 0;
}

% g++ -c strlit-to-void-ptr.c
strlit-to-void-ptr.c: In function `int main()':
strlit-to-void-ptr.c:6: error: invalid conversion from `const void*' to
`void*'

It seems to me that the conversion of 'const char *' to 'char *'
specified in ISO 14882 4.2 ¶2 should be applied prior to the conversion 
of 'char *' to 'void *' spec'd in 4.10.  I believe this is what allows 
the declaration and use of s2 to compile without error.

Also, we don't get a warning for this practice with any of the other 4 
compilers we use, which doesn't prove anything but does provide some 
support.  Are all of those compilers in fact non-compliant or is this a 
g++ bug?

--
       Jack Marr (marr@xxxxxxx)
       UGS -- Development Environment Tools
       Cypress, CA  "Ite Ursi"