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1365379518
str2wcs_internal is one of worst hot paths in the codebase, and this particular check can be optimized away for non-macOS hosts at compile time.
18 lines
505 B
C++
18 lines
505 B
C++
#include <cstdio>
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#include <cstdlib>
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#include <cstring>
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#include <cwchar>
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// Check whether the runtime mbrtowc implementation attempts to encode
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// invalid UTF-8 values.
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int main() {
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// TODO: I'm not sure how to enforce a UTF-8 locale without overriding the language
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char sample[] = "hello world";
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sample[0] |= 0xF8;
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wchar_t wsample[100] {};
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std::mbstate_t state = std::mbstate_t();
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int res = std::mbrtowc(wsample, sample, strlen(sample), &state);
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return res < 0 ? 0 : 1;
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}
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