bug in grep regarding

[Vijay Seshadri]

Bug report for GNU grep:
1. grep version number: 2.4.2
2. No patches made(used the binary)
3.  Machine type, OS etc: Redhat Linux 7.1, Pentium III 996Mhz single 
processor, Linux kernel 2.4.4-2
4.  No compiling done, used binary directly
5. grep -E '[]mz]' test.c

where test.c was

int main()
{
  fprintf(stdout,"This [goes to standard out\n");
  fprintf(stderr,"This ]goes to standard error\n");
  fprintf(stderr,"This -goes to standard error\n");
  fprintf(stderr,"This ^goes to standard error\n");
}

OutPut seen:

int main()

Output expected:

int main()
      fprintf(stderr,"This ]goes to standard error\n");

Problem Explanation: The Character ']' cannot be used inside a character 
list. The GNU documentation says that to use this in  a character list, 
put it in the beginning of the list. The same is the observation for '^' 
character.(which the doc says should in anywhere but first)
BTW, the same command works fine in solaris.

Please reply with resolution and comments if possible,

Vijay