macro __VAR_ARGS_ bug??

[Reza Roboubi]

Hi guys,

According to these documents:
http://gcc.gnu.org/onlinedocs/cpp/Variadic-Macros.html
http://gcc.gnu.org/gcc-3.1/c99status.html

it seems fairly clear that the following command

>> gcc test.c -Wall -E

when test.c is as follows:

#define eprintf(format , ...) fprintf (stderr, format , ## __VA_ARGS__)
eprintf ("success!\n",)

should NOT produce the following output:

fprintf (stderr, "success!\n")

but that there should be an extra comma in the output,  like this:

fprintf (stderr, "success!\n",)


I am  using gcc 3.1 and I'm getting the incorrect output. Am I doing
something wrong or is this a bug?