gcc - How to repair warning: missing braces around initializer?

Question

The warning is produced by the c code generated by vala.

warning: missing braces around initializer

The code works but the warning is annoying. The vala code referenced by the warning is

struct Position {uint x; uint y;}
private static Position positions[8];

The generated C code is

static Position det_positions[8] = {0};

I've tried initializing positions half a dozen different ways but can't seem to get the syntax to satisfy the warning. Is this GCC bug 53119 or is there a way to fix it?

Answer 1

Yes, this appears to be related to GCC bug 53119. It goes away if you change the C declaration to {{0}}. Your options are:

1. Ignore the warning.
2. Manipulate the C code after generation to have {{0}} instead of {0} on that line using sed or the like.
3. Declare the array extern in Vala, and write the C definition elsewhere. (The permanent version of #2.)
4. Do something like struct foo { int bar; Position positions[8]; } static foo position_holder and {0} will then be initialising position_holder.bar which is fine and the warning goes away.