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fix: cast char to unsigned char before passing to isspace to prevent undefined behavior - #2716
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Summary
Cast signed
chartounsigned charbefore passing to<ctype.h>functions (isspace()) to prevent undefined behavior with non-ASCII or UTF-8 byte sequences.Changes
strbuf->chars[...]to(unsigned char)inffStrbufEndsWithFn(src/common/FFstrbuf.h).strbuf->chars[index]to(unsigned char)inffStrbufTrimLeftSpace(src/common/impl/FFstrbuf.c).*strto(unsigned char)inffStrSet(src/common/strutil.h).tests/strutil.ctesting non-ASCII bytes\x80and\xff.Checklist
ctest --test-dir build --output-on-failure: 20/20 tests passed cleanly.