Tracing PostgreSQL Parser Reductions with Bison Debug Output
Enabling the Bison Trace Add the following snippet to the C declarations section of src/backend/parser/gram.y: #ifdef YYDEBUG #undef YYDEBUG #endif #define YYDEBUG 1 int base_yydebug = 1; int plpgsql_yydebug = 1; /* matches %name-prefix used by pl_gram.y */ #define YYFPRINTF trace_parser #include &l...