This email it links to is a fun read about ambiguities in parsing C: https://pdos.csail.mit.edu/archive/l/c/roskind.html https://pdos.csail.mit.edu/archive/l/c/

This email it links to is a fun read about ambiguities in parsing C: https://pdos.csail.mit.edu/archive/l/c/roskind.html https://pdos.csail.mit.edu/archive/l/c/roskind.html # Getting back to your example, since you copied the grammar from the ANSI # Standard, your grammar is probably wrong. To expose the problem, try # parsing: # # typedef int A, B(A); /* my bet is you get a syntax error*/ # # When correctly parsed, the above is equivalent to: # # typedef int A; # typedef int B(A); # # or simply: # # typedef int A; # typedef int B(int); /* B's type is function taking an int # returning and int */