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  • Hash : 44291868
    Author : Edward Thomson
    Date : 2018-09-12T10:53:03

    path validation: `char` is not signed by default. ARM treats its `char` type as `unsigned type` by default; as a result, testing a `char` value as being `< 0` is always false. This is a warning on ARM, which is promoted to an error given our use of `-Werror`. Per ISO 9899:199, section "6.2.5 Types": > The three types char, signed char, and unsigned char are collectively > called the character types. The implementation shall define char to > have the same range, representation, and behavior as either signed > char or unsigned char. > ... > Irrespective of the choice made, char is a separate type from the other > two and is not compatible with either.