Is this bug : g++ in gcc-3.4.0 ?

[yuki shimada]

Dear Person
At first ,I want to my thanks to your activity in linux world!
I am Yuki Shimada , live in Hachiouji, Tokyo,Japan.
How do you do.

This time, I had installed gcc-3.4.0 into my RedHat9 .
And then l had compiled "hello.cc" by using "g++" .But can not run
./a.out.   Compiler tells me a error.
(In case of using "gcc", to compile "hello.c", a./a.out can start well.)
Is this a bug ?
Thank you.
Sincerely yours,
  Yuki Shimada
 epsoft@mint.ocn.ne.jp