C grammar in GCC source code

Question

I'm looking for the C grammar in GCC source code, more specifically for the grammar in the yacc/bison form.

Answer 1

GCC of version 4.3 did not contain explicitly written C grammar. Parsing and semantical analysis were performed simultaneously, without presenting syntax tree as a separate data structure.

_{Information source: I read the GCC source code.}

Answer 2

Found the C grammar in Yacc specification in the GCC version 3.3 in the file "c-parse.y"