#include "base/strings/stringprintf.h"
#include <errno.h>
#include <stddef.h>
#include <vector>
#include "base/logging.h"
#include "base/scoped_clear_last_error.h"
#include "base/strings/string_util.h"
#include "build/build_config.h"
namespace base {
std::string StringPrintf(const char* format, ...) { … }
std::string StringPrintV(const char* format, va_list ap) { … }
void StringAppendF(std::string* dst, const char* format, ...) { … }
void StringAppendV(std::string* dst, const char* format, va_list ap) { … }
}