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warnings: introduce -Wprecedence

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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
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4
src/complain.h
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@@ -36,7 +36,9 @@ typedef enum
Wconflicts_sr = 1 << 2, /**< S/R conflicts. */
Wconflicts_rr = 1 << 3, /**< R/R conflicts. */
Wdeprecated = 1 << 4, /**< Obsolete constructs. */
Wother = 1 << 5, /**< All other warnings. */
Wprecedence = 1 << 5, /**< Useless precedence and associativity. */
Wother = 1 << 6, /**< All other warnings. */
Werror = 1 << 10, /** This bit is no longer used. */