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-rw-r--r--libc/bionic/wchar.cpp1
-rw-r--r--libc/include/wchar.h1
2 files changed, 2 insertions, 0 deletions
diff --git a/libc/bionic/wchar.cpp b/libc/bionic/wchar.cpp
index 8d56458..8367817 100644
--- a/libc/bionic/wchar.cpp
+++ b/libc/bionic/wchar.cpp
@@ -97,6 +97,7 @@ int swscanf(const wchar_t* /*s*/, const wchar_t* /*format*/, ... ) {
int iswalnum(wint_t wc) { return isalnum(wc); }
int iswalpha(wint_t wc) { return isalpha(wc); }
+int iswblank(wint_t wc) { return isblank(wc); }
int iswcntrl(wint_t wc) { return iscntrl(wc); }
int iswdigit(wint_t wc) { return isdigit(wc); }
int iswgraph(wint_t wc) { return isgraph(wc); }
diff --git a/libc/include/wchar.h b/libc/include/wchar.h
index 89c6fb6..04818b9 100644
--- a/libc/include/wchar.h
+++ b/libc/include/wchar.h
@@ -70,6 +70,7 @@ extern int fwprintf(FILE *, const wchar_t *, ...);
extern int fwscanf(FILE *, const wchar_t *, ...);
extern int iswalnum(wint_t);
extern int iswalpha(wint_t);
+extern int iswblank(wint_t);
extern int iswcntrl(wint_t);
extern int iswdigit(wint_t);
extern int iswgraph(wint_t);