Source: Avoid out-of-range inputs to std::isspace()
isspace
takes int
but documents that the value must be representable
by unsigned char
, or be EOF. Use a wrapper to cast to unsigned char
to avoid sign extension while converting to int
. This generalizes the
fix from !9132 (merged) to other isspace
call sites.
This was detected by assertions in the MSVC standard library while processing UTF-8 text.
Issue: #25561 (closed)