85   String() : m_str(NULL) {}  in String()
87   String(const char *format, ...) : m_str(NULL) {  in String()
97     if (m_str)  in reset()
98       ::free(m_str);  in reset()
99     m_str = s;  in reset()
102   const char *c_str() const { return m_str; }  in c_str()
112     ::vasprintf(&m_str, format, args);  in vprintf()
116     if (m_str && log_fd >= 0) {  in log()
117       const int len = strlen(m_str);  in log()
119         write(log_fd, m_str, len);  in log()
120         const char last_char = m_str[len - 1];  in log()
128   char *m_str;  member in fd_interposing::String