* failures when used in our hook macros below. */
/* In glibc, real fwrite_unlocked() is called in macro. */
-#undef fwrite_unlocked
+#ifdef HAVE_FWRITE_UNLOCKED
+# undef fwrite_unlocked
+#endif
/* In Clang when compiling with hardening flags (fortify) on Debian Wheezy. */
#undef printf
#undef fprintf
FILE *, stream, int, flag, char const *, format, va_list, ap)
/* unlocked_stdio(3), only functions from above are hooked */
+#ifdef HAVE_FWRITE_UNLOCKED
HOOK_FILE4(size_t, fwrite_unlocked, stream,
void const *, ptr, size_t, size, size_t, nmemb, FILE *, stream)
+#endif
+#ifdef HAVE_FPUTS_UNLOCKED
HOOK_FILE2(int, fputs_unlocked, stream,
char const *, s, FILE *, stream)
+#endif
+#ifdef HAVE_FPUTC_UNLOCKED
HOOK_FILE2(int, fputc_unlocked, stream,
int, c, FILE *, stream)
+#endif
HOOK_FILE2(int, putc_unlocked, stream,
int, c, FILE *, stream)
HOOK_FILE1(int, putchar_unlocked, stdout,
* part. As writes to stderr are never buffered, __overflow() is always called
* and everything works fine. This is only a problem if stdout is dupped to
* stderr (which shouldn't be the case too often). */
-#ifdef HAVE_STRUCT__IO_FILE__FILENO
+#if defined(HAVE_STRUCT__IO_FILE__FILENO) && defined(HAVE___OVERFLOW)
/* _IO_FILE is glibc's representation of FILE. */
-HOOK_FD2(int, __overflow, f->_fileno, _IO_FILE *, f, int, ch)
+HOOK_FILE2(int, __overflow, f, _IO_FILE *, f, int, ch)
#endif
/* perror(3) */