Rule A18-0-3 (required, implementation, automated)
The library
(locale.h) and the setlocale function shall not be used.
Rationale
A call to the setlocale function introduces a data race with other calls to setlocale function.
It may also introduce a data race with calls to functions that are affected by the current locale settings: fprintf, isprint, iswdigit, localeconv, tolower, fscanf, ispunct, iswgraph, mblen, toupper, isalnum, isspace, iswlower, mbstowcs, towlower, isalpha, isupper, iswprint, mbtowc, towupper, isblank, iswalnum, iswpunct, setlocale, wcscoll, iscntrl, iswalpha, iswspace, strcoll, wcstod, isdigit, iswblank, iswupper, strerror, wcstombs, isgraph, iswcntrl, iswxdigit, strtod, wcsxfrm, islower, iswctype, isxdigit, strxfrm, wctomb.
## See also
JSF December 2005 [8]: AV Rule 19 <locale.h> and the setlocale function shall
not be used.