From: John Darrington <john@darrington.wattle.id.au>
Date: Fri, 1 Apr 2016 13:38:37 +0000 (+0200)
Subject: lexer.h: Add WARN_UNUSED_RESULT to lex_force functions.
X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=cb854f9f1f893a9a966728db9bf22f8b159d1870;p=pspp

lexer.h: Add WARN_UNUSED_RESULT to lex_force functions.

There does not seem to be any sensible and safe use of these
functions unless the return value is used somehow.
---

diff --git a/src/language/lexer/lexer.h b/src/language/lexer/lexer.h
index 03202e260b..7383927eef 100644
--- a/src/language/lexer/lexer.h
+++ b/src/language/lexer/lexer.h
@@ -124,13 +124,13 @@ bool lex_match_int (struct lexer *, int);
 bool lex_match_phrase (struct lexer *, const char *s);
 
 /* Forcible matching functions. */
-bool lex_force_match (struct lexer *, enum token_type);
-bool lex_force_match_id (struct lexer *, const char *);
-bool lex_force_int (struct lexer *);
-bool lex_force_num (struct lexer *);
-bool lex_force_id (struct lexer *);
-bool lex_force_string (struct lexer *);
-bool lex_force_string_or_id (struct lexer *);
+bool lex_force_match (struct lexer *, enum token_type) WARN_UNUSED_RESULT;
+bool lex_force_match_id (struct lexer *, const char *) WARN_UNUSED_RESULT;
+bool lex_force_int (struct lexer *) WARN_UNUSED_RESULT;
+bool lex_force_num (struct lexer *) WARN_UNUSED_RESULT;
+bool lex_force_id (struct lexer *) WARN_UNUSED_RESULT;
+bool lex_force_string (struct lexer *) WARN_UNUSED_RESULT;
+bool lex_force_string_or_id (struct lexer *) WARN_UNUSED_RESULT;
 
 /* Token accessors. */
 enum token_type lex_token (const struct lexer *);