sources/cxx-stl/llvm-libc++/include/support/android/stdio.h

#ifndef LLVM_LIBCXX_SUPPORT_ANDROID_STDIO_H
#define LLVM_LIBCXX_SUPPORT_ANDROID_STDIO_H

// This is to avoid a compiler error when the putc() macro definition
// in <stdio.h> follows a putc() function definition which is apparently
// not compatible with it.
#define _POSIX_THREADS 1
#include_next <stdio.h>

#include <stdarg.h>
#include <xlocale.h>

extern "C" {

char* asprintf_l(char**, locale_t, const char*, ...);
int sprintf_l(char*, locale_t, const char*, ...);
int snprintf_l(char*, size_t, locale_t, const char*, ...);
int sscanf_l(const char*, locale_t, const char*, ...);

int vfwscanf(FILE*, const wchar_t*, va_list);
int vswscanf(const wchar_t *, const wchar_t *, va_list);
int vwscanf(const wchar_t *, va_list);

}  // extern "C"

#endif  // LLVM_LIBCXX_SUPPORT_ANDROID_STDIO_H