warnings: introduce -Wprecedence

The new warning category "precedence" flags useless precedence and
associativity.  -Wprecedence can now be used, it is disabled by default.
The warnings about precedence and associativity are grouped into one, and
the testsuite was corrected accordingly.

* src/complain.h (warnings): Introduce "precedence".
* src/complain.c (warnings_print_categories): Adjust.
* src/getargs.c (warnings_args, warning_types): Likewise.
* src/symtab.h, src/symtab.c (print_associativity_warnings): Remove.
* src/symtab.h (register_assoc): Correct arguments.
* src/symtab.c (print_precedence_warnings): Print both warnings together.
* doc/bison.texi (Bison options): Document the warnings and provide an
example.
* tests/conflicts.at, tests/existing.at, tests/local.at,
* tests/regression.at: Adapt the testsuite for the new category
(-Wprecedence instead of -Wother where appropriate).
This commit is contained in:
Valentin Tolmer
2013-01-30 11:30:15 +01:00
committed by Akim Demaille
parent df1ca1b0de
commit cc2235ace2
12 changed files with 331 additions and 232 deletions

View File

@@ -266,7 +266,8 @@ struct symgraph
void register_precedence (graphid first, graphid snd);
/** Print a warning for each symbol whose precedence is useless. */
/** Print a warning for each symbol whose precedence and/or associativity
* is useless. */
void print_precedence_warnings (void);
@@ -274,9 +275,7 @@ void print_precedence_warnings (void);
| Symbol associativity |
`----------------------*/
void register_assoc (int i, int j);
void print_assoc_warnings (void);
void register_assoc (graphid i, graphid j);
/*-----------------.
| Semantic types. |