Avoid GCC 16 -Wstringop-overflow false positive in NxsString - #24
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GCC 16.1's tightened -Wstringop-overflow analysis flags a __builtin_memmove "writing into a region of size 0" inlined from std::char_traits<char>::copy, triggered by the append(std::string(...)) pattern in NxsString::operator+= (reported by CRAN gcc-SAN checks). Rewrite the two suspect overloads to avoid constructing a temporary std::string before appending: - operator+=(const char *): append(s) directly - operator+=(const char c): push_back(c) Both are behavior-preserving and drop the char_traits::copy-from-a- bounded-buffer path that the analyzer mis-reasons about. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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GCC 16.1's tightened -Wstringop-overflow analysis flags a __builtin_memmove "writing into a region of size 0" inlined from std::char_traits::copy, triggered by the append(std::string(...)) pattern in NxsString::operator+= (reported by CRAN gcc-SAN checks).
Rewrite the two suspect overloads to avoid constructing a temporary std::string before appending:
Both are behavior-preserving and drop the char_traits::copy-from-a- bounded-buffer path that the analyzer mis-reasons about.