On Wed, 2005-12-07 at 00:12 +0100, Alain Cremieux wrote:
Hi, I have a problem with c2hs parsing a file in graphviz. I have preprocessed it. The large file chokes on line 1243 (I think) The small one is archi reduced, but works on the same line. Any hint ?
Ah ha! Found it. Here's a minimal test case: typedef struct path { } path; typedef struct Agedgeinfo_t { int path; } Agedgeinfo_t; It's because the path has already been defined as a type identifer and the parser is looking for a non-type identifer. However since it is obviously allowed to name a variable the same as a typedef'ed name then the parser should instead be looking for a non-type or type identifer. However the change to the grammar to make this possible is non-trivial. The grammar I was working from originally makes the same mistake. http://www.lysator.liu.se/c/ANSI-C-grammar-y.html The gcc grammar has a very complex way of partitioning the typedef and non-typedef cases to allow a typedefed name to be reused as an identifier in the right context. I'm still looking into it. Duncan