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8f311c40e7
Changed the parameters of is* functions (isdigit and isspace) in <ctype.h> from char to uint8_t. These functions require int parameters, and passing char can cause warnings in some compiler versions. Since -Werror is enabled, warnings are treated as errors (error: array subscript has type ‘char’ [-Werror=char-subscripts]), leading to compilation failure. Using uint8_t, which is automatically converted to int, prevents these warnings.