geany/geany — comment on commit e53d5b82992550921451d30487b1a426477338f5
File: src/highlightingmappings.h line 45
By b4n:

Yes, but unfortunately I haven't the C90 draft at hand. Implicit initialization is a C89 feature, I just quoted this because it's not well known and GCC uses to emit warnings about such cases easily (though even it's manual tells you the field just get initialize to 0).

I just got an ANSIC draft that says the same, I'll update this to quote this one.