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string: silence the code analysis warning for (nullptr, 0) combinations

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Functions are allowed to be called with nullptr string input as long as
the length of those strings is set to 0.

Signed-off-by: Simon Rozman <simon@rozman.si>
This commit is contained in:
Simon Rozman 2023-07-17 13:01:56 +02:00
parent aedb0921f2
commit 33859f3a2a
1 changed files with 2 additions and 0 deletions
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2
include/stdex/string.hpp
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@ -113,6 +113,7 @@ namespace stdex
template <class T>
inline size_t islbreak(_In_reads_or_z_opt_(count) const T* chr, _In_ size_t count)
{
_Analysis_assume_(chr || !count);
if (count >= 2 && (chr[0] == '\r' && chr[1] == '\n' || chr[0] == '\n' && chr[1] == '\r'))
return 2;
if (count > 1 && (chr[0] == '\n' || chr[0] == '\r'))
@ -128,6 +129,7 @@ namespace stdex
///
inline size_t glyphlen(_In_reads_or_z_opt_(count) const wchar_t* glyph, size_t count)
{
_Analysis_assume_(glyph || !count);
if (count) {
#ifdef _WIN32
size_t i = count < 2 || !is_surrogate_pair(glyph) ? 1 : 2;