Created attachment 372842 [details]
Reproducer

Description of problem:
If you try to use a struct with an unnamed union field, for example:

struct foo {
  int bar;
  union {
    int baz;
    int bam;
  };
};

And then try to statically initialize one using field labels like so:

struct foo mine = { .bar = 1, .baz = 2 };

you get:

error: unknown field ‘baz’ specified in initializer

Version-Release number of selected component (if applicable):
gcc-4.4.2-7.fc12

Steps to Reproduce:
Try compiling the attached program.
  
Actual results:
reproducer.c:13: error: unknown field ‘baz’ specified in initializer

Expected results:
Compiles. mine.bar == 1, mine.baz == mine.bam == 2