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string: silence false-positive Code Analysis warning

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Signed-off-by: Simon Rozman <simon@rozman.si>
This commit is contained in:
Simon Rozman 2024-11-19 10:18:03 +01:00
parent f45c92da23
commit 246f2baa1e
1 changed files with 4 additions and 1 deletions
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5
include/stdex/string.hpp
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@ -1645,12 +1645,15 @@ namespace stdex
/// \return Number of code units excluding zero terminator in the dst string after the operation.
///
inline size_t strcpy(
_Out_ _Post_maybez_ utf32_t* dst,
_Out_writes_z_(_String_length_(src) + 1) utf32_t* dst,
_In_z_ const utf16_t* src)
{
stdex_assert(dst);
stdex_assert(src);
for (size_t j = 0, i = 0; ; ++j, ++i) {
// strcpy has no knowledge, how big the dst buffer is, but we know, we won't be writing more than strlen(src) + 1 characters into it.
// Code Analysis somehow doesn't work this out from the code and the dst SAL above, and reports a false-positive warning.
#pragma warning(suppress: 6386)
if ((dst[j] = (is_surrogate_pair(&src[i]) ? surrogate_pair_to_ucs4(&src[i++]) : static_cast<utf32_t>(src[i]))) == 0)
return j;
}