remove internal definitions of NULL

ISO C guarantees this to exist via stddef.h or stdlib.h.

diff --git a/lib/common/logic.h b/lib/common/logic.h
index 209382504ea07d5d7dd78c8f9bb97def98c2374f..17f48f77f3558d58244c21e2098a8678c721912d 100644 (file)
--- a/lib/common/logic.h
+++ b/lib/common/logic.h
@@ -32,10 +32,6 @@ extern "C" {
 #define NOTUSED(var) (void) var
 #endif
 
-#ifndef NULL
-#define NULL (void *)0
-#endif
-
 #ifndef NIL
 #define NIL(type) ((type)0)
 #endif

diff --git a/lib/sfio/sfio.h b/lib/sfio/sfio.h
index 75238495e339d566e3c0a821cb94500b8f98c0fd..116a7ceaca4d0c6f09406752a7025b0afe14a085 100644 (file)
--- a/lib/sfio/sfio.h
+++ b/lib/sfio/sfio.h
@@ -184,9 +184,6 @@ extern "C" {
 #define SFFMT_SET      07777770        /* flags settable on calling extf      */
 
 /* various constants */
-#ifndef NULL
-#define NULL           0
-#endif
 #ifndef EOF
 #define EOF            (-1)
 #endif

diff --git a/tclpkg/tclhandle/tclhandle.h b/tclpkg/tclhandle/tclhandle.h
index 1e26bee80b7443430ce585c120637afd428f7f34..d425108e532bcdae1e247f0ef1d9738e5d6f77c5 100644 (file)
--- a/tclpkg/tclhandle/tclhandle.h
+++ b/tclpkg/tclhandle/tclhandle.h
@@ -20,10 +20,6 @@ extern "C" {
 #define TCL_OK (0)
 #endif
 
-#ifndef NULL
-#define NULL (0)
-#endif
-
 #define ISSPACE(c) (isspace ((unsigned char) c))
 
 /*