use unlocked byte I/O operations (#5)

StefanKarpinski · Mar 24, 2020 · 62e2a2d · 62e2a2d
1 parent 4a588fd
commit 62e2a2d
Showing 1 changed file with 1 addition and 4 deletions.
diff --git a/zrl.c b/zrl.c
@@ -4,12 +4,9 @@
 #include <stdio.h>
 #include <errno.h>
 
-#if _POSIX_C_SOURCE >= 1 || _XOPEN_SOURCE || _POSIX_SOURCE || _BSD_SOURCE || _SVID_SOURCE
+#ifdef __GNUC__
 #define fgetc  getc_unlocked
 #define fputc  putc_unlocked
-#endif
-
-#if _BSD_SOURCE || _SVID_SOURCE
 #define feof   feof_unlocked
 #define ferror ferror_unlocked
 #endif