parser: fix warnings against code generated by ragel

* type-limits when plain-char is unsigned
* unused-const-variable for NFA constants

1 files changed, 2 insertions, 1 deletions

diff --git a/Rakefile b/Rakefile
index 813a6d9..8de6ded 100644
--- a/Rakefile
+++ b/Rakefile
@@ -282,7 +282,8 @@ else
       end
       src = File.read("parser.c").gsub(/[ \t]+$/, '')
       src.gsub!(/^static const int (JSON_.*=.*);$/, 'enum {\1};')
-      src.gsub!(/0 <= \(\*p\) && \(\*p\) <= 31/, "0 <= (signed char)(*p) && (*p) <= 31")
+      src.gsub!(/^(static const char) (_JSON(?:_\w+)?_nfa_\w+)(?=\[\] =)/, '\1 MAYBE_UNUSED(\2)')
+      src.gsub!(/0 <= ([\( ]+\*[\( ]*p\)+) && \1 <= 31/, "0 <= (signed char)(*(p)) && (*(p)) <= 31")
       src[0, 0] = "/* This file is automatically generated from parser.rl by using ragel */"
       File.open("parser.c", "w") {|f| f.print src}
     end