[c.locales]

28.3.5.1 Header <clocale> synopsis [clocale.syn]

namespace std { struct lconv; char* setlocale(int category, const char* locale); lconv* localeconv(); } #define NULL see [support.types.nullptr] #define LC_ALL see below #define LC_COLLATE see below #define LC_CTYPE see below #define LC_MONETARY see below #define LC_NUMERIC see below #define LC_TIME see below

The contents and meaning of the header are the same as the C standard library header <locale.h>.

28.3.5.2 Data races [clocale.data.races]

Calls to the function setlocale may introduce a data race ([res.on.data.races]) with other calls to setlocale or with calls to the functions listed in Table 98 .

See also: ISO/IEC 9899:2018, 7.11

Table 98: Potential setlocale data races [tab:setlocale.data.races]

🔗	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

28 Text processing library [text]

28.3 Localization library [localization]

28.3.5 C library locales [c.locales]

28.3.5.1 Header <clocale> synopsis [clocale.syn]

28.3.5.2 Data races [clocale.data.races]