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use a lamba to unwind protect around the loop #1

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Merged
merged 1 commit into from
Sep 16, 2025
Merged

use a lamba to unwind protect around the loop #1

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12 changes: 4 additions & 8 deletions inst/include/cpp11/as.hpp
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Original file line number Diff line number Diff line change
Expand Up @@ -287,18 +287,14 @@ template <typename Container, typename AsCstring>
SEXP as_sexp_strings(const Container& from, AsCstring&& c_str) {
R_xlen_t size = from.size();

SEXP data;
try {
data = PROTECT(safe[Rf_allocVector](STRSXP, size));
SEXP data = PROTECT(safe[Rf_allocVector](STRSXP, size));

unwind_protect([&] {
auto it = from.begin();
for (R_xlen_t i = 0; i < size; ++i, ++it) {
SET_STRING_ELT(data, i, safe[Rf_mkCharCE](c_str(*it), CE_UTF8));
SET_STRING_ELT(data, i, Rf_mkCharCE(c_str(*it), CE_UTF8));
}
} catch (const unwind_exception& e) {
UNPROTECT(1);
throw e;
}
});

UNPROTECT(1);
return data;
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