1 files changed, 20 insertions, 0 deletions
diff --git a/system/lib/libc/musl/src/stdio/vsscanf.c b/system/lib/libc/musl/src/stdio/vsscanf.c
new file mode 100644
index 00000000..6492f78b
--- /dev/null
+++ b/system/lib/libc/musl/src/stdio/vsscanf.c
@@ -0,0 +1,20 @@
+#include "stdio_impl.h"
+#include "libc.h"
+
+static size_t do_read(FILE *f, unsigned char *buf, size_t len)
+{
+	return __string_read(f, buf, len);
+}
+
+#define vfscanf MUSL_vfscanf // XXX Emscripten: Call into musl version of vfscanf for asm.js performance, not the handwritten js version.
+
+int vsscanf(const char *restrict s, const char *restrict fmt, va_list ap)
+{
+	FILE f = {
+		.buf = (void *)s, .cookie = (void *)s,
+		.read = do_read, .lock = -1
+	};
+	return vfscanf(&f, fmt, ap);
+}
+
+weak_alias(vsscanf,__isoc99_vsscanf);