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Ragel generates a code `0 <= (*p)` where `*p` is char. As char is unsigned by default on arm and RISC-V, it is warned by gcc: ``` compiling parser.c parser.c: In function ‘JSON_parse_string’: parser.c:1566:2: warning: comparison is always true due to limited range of data type [-Wtype-limits] if ( 0 <= (*p) && (*p) <= 31 ) ^ parser.c:1596:2: warning: comparison is always true due to limited range of data type [-Wtype-limits] if ( 0 <= (*p) && (*p) <= 31 ) ^ ``` This change removes the warning by substituting the condition with `0 <= (signed char)(*p)`. |
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