A bug with variables and functions of the same name?

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A bug with variables and functions of the same ...
\ darby johnston (28 Nov 2006)
. \ Ian Lance Taylor (28 Nov 2006)

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Subject:	A bug with variables and functions of the same name?
Group:	Gcc-help
From:	darby johnston
Date:	28 Nov 2006

Hi,

Found something sort of odd:

int a(int);

int main(int, char **)
{
int a = a(100);
return 0;
}

> g++ -Wall -o foo foo.cxx
foo.cxx: In function ‘int main(int, char**)’:
foo.cxx:7: error: ‘a’ cannot be used as a function

That seems normal, but add a "const" to the above:

const int a = a(100);

And it compiles without any errors (and even links
ok). I made this simple test case from a bug I found
in my code, which even stranger, emitted warnings
like:

warning: ‘retval.170’ is used uninitialized in this
function

Of course, I don't have any variables named
"retval.170". Is this a bug with gcc?

gcc version 4.0.3 (Ubuntu 4.0.3-1ubuntu5)

Thanks for any help!