1 files changed, 41 insertions, 0 deletions

diff --git a/src/sysstdio.h b/src/sysstdio.h
index 45ee33f5580..7fbcefcdad9 100644
--- a/src/sysstdio.h
+++ b/src/sysstdio.h
@@ -33,4 +33,45 @@ extern FILE *emacs_fopen (char const *, char const *);
 # define FOPEN_TEXT ""
 #endif
 
+/* These are compatible with unlocked-io.h, if both files are included.  */
+#if !HAVE_DECL_CLEARERR_UNLOCKED
+# define clearerr_unlocked(x) clearerr (x)
+#endif
+#if !HAVE_DECL_FEOF_UNLOCKED
+# define feof_unlocked(x) feof (x)
+#endif
+#if !HAVE_DECL_FERROR_UNLOCKED
+# define ferror_unlocked(x) ferror (x)
+#endif
+#if !HAVE_DECL_FFLUSH_UNLOCKED
+# define fflush_unlocked(x) fflush (x)
+#endif
+#if !HAVE_DECL_FGETS_UNLOCKED
+# define fgets_unlocked(x,y,z) fgets (x,y,z)
+#endif
+#if !HAVE_DECL_FPUTC_UNLOCKED
+# define fputc_unlocked(x,y) fputc (x,y)
+#endif
+#if !HAVE_DECL_FPUTS_UNLOCKED
+# define fputs_unlocked(x,y) fputs (x,y)
+#endif
+#if !HAVE_DECL_FREAD_UNLOCKED
+# define fread_unlocked(w,x,y,z) fread (w,x,y,z)
+#endif
+#if !HAVE_DECL_FWRITE_UNLOCKED
+# define fwrite_unlocked(w,x,y,z) fwrite (w,x,y,z)
+#endif
+#if !HAVE_DECL_GETC_UNLOCKED
+# define getc_unlocked(x) getc (x)
+#endif
+#if !HAVE_DECL_GETCHAR_UNLOCKED
+# define getchar_unlocked() getchar ()
+#endif
+#if !HAVE_DECL_PUTC_UNLOCKED
+# define putc_unlocked(x,y) putc (x,y)
+#endif
+#if !HAVE_DECL_PUTCHAR_UNLOCKED
+# define putchar_unlocked(x) putchar (x)
+#endif
+
 #endif /* EMACS_SYSSTDIO_H */