Few more spacing/formatting tweaks

16 files changed, 59 insertions, 59 deletions

diff --git a/unix/dltest/pkgb.c b/unix/dltest/pkgb.c
index ca64a11..9c8aaae 100644
--- a/unix/dltest/pkgb.c
+++ b/unix/dltest/pkgb.c
@@ -52,7 +52,7 @@ Pkgb_SubObjCmd(
 	    || (Tcl_GetIntFromObj(interp, objv[2], &second) != TCL_OK)) {
 	char buf[TCL_INTEGER_SPACE];
 	snprintf(buf, sizeof(buf), "%d", Tcl_GetErrorLine(interp));
-	Tcl_AppendResult(interp, " in line: ", buf, (void *)NULL);
+	Tcl_AppendResult(interp, " in line: ", buf, (char *)NULL);
 	return TCL_ERROR;
     }
     Tcl_SetObjResult(interp, Tcl_NewIntObj(first - second));
diff --git a/unix/dltest/pkgooa.c b/unix/dltest/pkgooa.c
index 60e3864..7a84481 100644
--- a/unix/dltest/pkgooa.c
+++ b/unix/dltest/pkgooa.c
@@ -108,18 +108,18 @@ Pkgooa_Init(
     }
     if (tclStubsPtr == NULL) {
 	Tcl_AppendResult(interp, "Tcl stubs are not initialized, "
-		"did you compile using -DUSE_TCL_STUBS? ", (void *)NULL);
+		"did you compile using -DUSE_TCL_STUBS? ", (char *)NULL);
 	return TCL_ERROR;
     }
     if (Tcl_OOInitStubs(interp) == NULL) {
 	return TCL_ERROR;
     }
     if (tclOOStubsPtr == NULL) {
-	Tcl_AppendResult(interp, "TclOO stubs are not initialized", (void *)NULL);
+	Tcl_AppendResult(interp, "TclOO stubs are not initialized", (char *)NULL);
 	return TCL_ERROR;
     }
     if (tclOOIntStubsPtr == NULL) {
-	Tcl_AppendResult(interp, "TclOO internal stubs are not initialized", (void *)NULL);
+	Tcl_AppendResult(interp, "TclOO internal stubs are not initialized", (char *)NULL);
 	return TCL_ERROR;
     }
 
diff --git a/unix/tclEpollNotfy.c b/unix/tclEpollNotfy.c
index 659e659..2a1733a 100644
--- a/unix/tclEpollNotfy.c
+++ b/unix/tclEpollNotfy.c
@@ -731,7 +731,7 @@ TclpWaitForEvent(
 	    i = read(tsdPtr->triggerEventFd, &eventFdVal, sizeof(eventFdVal));
 	    if ((i != sizeof(eventFdVal)) && (errno != EAGAIN)) {
 		Tcl_Panic("%s: read from %p->triggerEventFd: %s",
-			"Tcl_WaitForEvent", (void *) tsdPtr, strerror(errno));
+			"Tcl_WaitForEvent", tsdPtr, strerror(errno));
 	    }
 	    continue;
 	}
@@ -743,7 +743,7 @@ TclpWaitForEvent(
 		    sizeof(triggerPipeVal));
 	    if ((i != sizeof(triggerPipeVal)) && (errno != EAGAIN)) {
 		Tcl_Panic("%s: read from %p->triggerPipe[0]: %s",
-			"Tcl_WaitForEvent", (void *) tsdPtr, strerror(errno));
+			"Tcl_WaitForEvent", tsdPtr, strerror(errno));
 	    }
 	    continue;
 	}
diff --git a/unix/tclKqueueNotfy.c b/unix/tclKqueueNotfy.c
index 487af9c..062139a 100644
--- a/unix/tclKqueueNotfy.c
+++ b/unix/tclKqueueNotfy.c
@@ -740,7 +740,7 @@ TclpWaitForEvent(
 	    i = read(tsdPtr->triggerPipe[0], buf, 1);
 	    if ((i == -1) && (errno != EAGAIN)) {
 		Tcl_Panic("Tcl_WaitForEvent: read from %p->triggerPipe: %s",
-			(void *) tsdPtr, strerror(errno));
+			tsdPtr, strerror(errno));
 	    }
 	    continue;
 	}
diff --git a/unix/tclLoadAix.c b/unix/tclLoadAix.c
index 17fca04..2f6b6d4 100644
--- a/unix/tclLoadAix.c
+++ b/unix/tclLoadAix.c
@@ -122,7 +122,7 @@ dlopen(
     for (mp = modList; mp; mp = mp->next) {
 	if (strcmp(mp->name, path) == 0) {
 	    mp->refCnt++;
-	    return (void *) mp;
+	    return (void *)mp;
 	}
     }
 
@@ -142,7 +142,7 @@ dlopen(
      * a normal char *. Ugly.
      */
 
-    mp->entry = (void *) load((char *)path, L_NOAUTODEFER, NULL);
+    mp->entry = (void *)load((char *)path, L_NOAUTODEFER, NULL);
     if (mp->entry == NULL) {
 	free(mp->name);
 	free(mp);
@@ -231,7 +231,7 @@ dlopen(
 	errvalid = 0;
     }
 
-    return (void *) mp;
+    return (void *)mp;
 }
 
 /*
diff --git a/unix/tclLoadDl.c b/unix/tclLoadDl.c
index ee92318..23565c5 100644
--- a/unix/tclLoadDl.c
+++ b/unix/tclLoadDl.c
@@ -172,7 +172,7 @@ FindSymbol(
     Tcl_DString newName, ds;	/* Buffers for converting the name to
 				 * system encoding and prepending an
 				 * underscore*/
-    void *handle = (void *) loadHandle->clientData;
+    void *handle = loadHandle->clientData;
 				/* Native handle to the loaded library */
     void *proc;			/* Address corresponding to the resolved
 				 * symbol */
@@ -232,7 +232,7 @@ FindSymbol(
 	    Tcl_SetObjResult(interp, Tcl_ObjPrintf(
 		    "cannot find symbol \"%s\": %s", symbol, errorStr));
 	    Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "LOAD_SYMBOL", symbol,
-		    (void *)NULL);
+		    (char *)NULL);
 	}
     }
     return proc;
diff --git a/unix/tclLoadDyld.c b/unix/tclLoadDyld.c
index 6aa14b2..54290ec 100644
--- a/unix/tclLoadDyld.c
+++ b/unix/tclLoadDyld.c
@@ -422,7 +422,7 @@ FindSymbol(
 	Tcl_SetObjResult(interp, Tcl_ObjPrintf(
 		"cannot find symbol \"%s\": %s", symbol, errMsg));
 	Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "LOAD_SYMBOL", symbol,
-		(void *)NULL);
+		(char *)NULL);
     }
     return (void *)proc;
 }
diff --git a/unix/tclLoadNext.c b/unix/tclLoadNext.c
index 5acd397..12df7e4 100644
--- a/unix/tclLoadNext.c
+++ b/unix/tclLoadNext.c
@@ -153,7 +153,7 @@ FindSymbol(
     if (proc == NULL && interp != NULL) {
 	Tcl_SetObjResult(interp, Tcl_ObjPrintf(
 		"cannot find symbol \"%s\"", symbol));
-	Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "LOAD_SYMBOL", symbol, (void *)NULL);
+	Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "LOAD_SYMBOL", symbol, (char *)NULL);
     }
     return proc;
 }
diff --git a/unix/tclLoadOSF.c b/unix/tclLoadOSF.c
index 43f29c8..1c8b53a 100644
--- a/unix/tclLoadOSF.c
+++ b/unix/tclLoadOSF.c
@@ -170,7 +170,7 @@ FindSymbol(
     if (proc == NULL && interp != NULL) {
 	Tcl_SetObjResult(interp, Tcl_ObjPrintf(
 		"cannot find symbol \"%s\"", symbol));
-	Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "LOAD_SYMBOL", symbol, (void *)NULL);
+	Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "LOAD_SYMBOL", symbol, (char *)NULL);
     }
     return proc;
 }
diff --git a/unix/tclLoadShl.c b/unix/tclLoadShl.c
index 63e9328..9ddfa56 100644
--- a/unix/tclLoadShl.c
+++ b/unix/tclLoadShl.c
@@ -141,12 +141,12 @@ FindSymbol(
      */
 
     if (shl_findsym(&handle, symbol, (short) TYPE_PROCEDURE,
-	    (void *) &proc) != 0) {
+	    (void *)&proc) != 0) {
 	Tcl_DStringInit(&newName);
 	TclDStringAppendLiteral(&newName, "_");
 	Tcl_DStringAppend(&newName, symbol, TCL_INDEX_NONE);
 	if (shl_findsym(&handle, Tcl_DStringValue(&newName),
-		(short) TYPE_PROCEDURE, (void *) &proc) != 0) {
+		(short) TYPE_PROCEDURE, (void *)&proc) != 0) {
 	    proc = NULL;
 	}
 	Tcl_DStringFree(&newName);
diff --git a/unix/tclSelectNotfy.c b/unix/tclSelectNotfy.c
index 252c493..bede898 100644
--- a/unix/tclSelectNotfy.c
+++ b/unix/tclSelectNotfy.c
@@ -336,7 +336,7 @@ TclpInitNotifier(void)
 	clazz.hbrBackground = NULL;
 	clazz.lpszMenuName = NULL;
 	clazz.lpszClassName = className;
-	clazz.lpfnWndProc = (void *) NotifierProc;
+	clazz.lpfnWndProc = (void *)NotifierProc;
 	clazz.hIcon = NULL;
 	clazz.hCursor = NULL;
 
diff --git a/unix/tclUnixChan.c b/unix/tclUnixChan.c
index 3e887d0..0f63293 100644
--- a/unix/tclUnixChan.c
+++ b/unix/tclUnixChan.c
@@ -112,7 +112,7 @@ typedef struct {
     if (interp) {							\
 	Tcl_SetObjResult(interp, Tcl_ObjPrintf(				\
 		"%s not supported for this platform", (detail)));	\
-	Tcl_SetErrorCode(interp, "TCL", "UNSUPPORTED", (void *)NULL);		\
+	Tcl_SetErrorCode(interp, "TCL", "UNSUPPORTED", (char *)NULL);		\
     }
 
 /*
@@ -841,7 +841,7 @@ TtySetOptionProc(
 			"bad value for -handshake: must be one of"
 			" xonxoff, rtscts, dtrdsr or none", -1));
 		Tcl_SetErrorCode(interp, "TCL", "OPERATION", "FCONFIGURE",
-			"VALUE", (void *)NULL);
+			"VALUE", (char *)NULL);
 	    }
 	    return TCL_ERROR;
 	}
@@ -862,7 +862,7 @@ TtySetOptionProc(
 		Tcl_SetObjResult(interp, Tcl_NewStringObj(
 			"bad value for -xchar: should be a list of"
 			" two elements with each a single 8-bit character", -1));
-		Tcl_SetErrorCode(interp, "TCL", "VALUE", "XCHAR", (void *)NULL);
+		Tcl_SetErrorCode(interp, "TCL", "VALUE", "XCHAR", (char *)NULL);
 	    }
 	    Tcl_Free(argv);
 	    return TCL_ERROR;
@@ -928,7 +928,7 @@ TtySetOptionProc(
 			"bad value for -ttycontrol: should be a list of"
 			" signal,value pairs", -1));
 		Tcl_SetErrorCode(interp, "TCL", "OPERATION", "FCONFIGURE",
-			"VALUE", (void *)NULL);
+			"VALUE", (char *)NULL);
 	    }
 	    Tcl_Free(argv);
 	    return TCL_ERROR;
@@ -970,7 +970,7 @@ TtySetOptionProc(
 			    "bad signal \"%s\" for -ttycontrol: must be"
 			    " DTR, RTS or BREAK", argv[i]));
 		    Tcl_SetErrorCode(interp, "TCL", "OPERATION", "FCONFIGURE",
-			"VALUE", (void *)NULL);
+			"VALUE", (char *)NULL);
 		}
 		Tcl_Free(argv);
 		return TCL_ERROR;
@@ -1002,7 +1002,7 @@ TtySetOptionProc(
 			"bad mode \"%s\" for -closemode: must be"
 			" default, discard, or drain", value));
 		Tcl_SetErrorCode(interp, "TCL", "OPERATION", "FCONFIGURE",
-			"VALUE", (void *)NULL);
+			"VALUE", (char *)NULL);
 	    }
 	    return TCL_ERROR;
 	}
@@ -1060,7 +1060,7 @@ TtySetOptionProc(
 			"bad mode \"%s\" for -inputmode: must be"
 			" normal, password, raw, or reset", value));
 		Tcl_SetErrorCode(interp, "TCL", "OPERATION", "FCONFIGURE",
-			"VALUE", (void *)NULL);
+			"VALUE", (char *)NULL);
 	    }
 	    return TCL_ERROR;
 	}
@@ -1638,7 +1638,7 @@ TtyParseMode(
 	if (interp != NULL) {
 	    Tcl_SetObjResult(interp, Tcl_ObjPrintf(
 		    "%s: should be baud,parity,data,stop", bad));
-	    Tcl_SetErrorCode(interp, "TCL", "VALUE", "SERIALMODE", (void *)NULL);
+	    Tcl_SetErrorCode(interp, "TCL", "VALUE", "SERIALMODE", (char *)NULL);
 	}
 	return TCL_ERROR;
     }
@@ -1668,7 +1668,7 @@ TtyParseMode(
 		    "n, o, or e"
 #endif /* PAREXT */
 		    ));
-	    Tcl_SetErrorCode(interp, "TCL", "VALUE", "SERIALMODE", (void *)NULL);
+	    Tcl_SetErrorCode(interp, "TCL", "VALUE", "SERIALMODE", (char *)NULL);
 	}
 	return TCL_ERROR;
     }
@@ -1677,7 +1677,7 @@ TtyParseMode(
 	if (interp != NULL) {
 	    Tcl_SetObjResult(interp, Tcl_ObjPrintf(
 		    "%s data: should be 5, 6, 7, or 8", bad));
-	    Tcl_SetErrorCode(interp, "TCL", "VALUE", "SERIALMODE", (void *)NULL);
+	    Tcl_SetErrorCode(interp, "TCL", "VALUE", "SERIALMODE", (char *)NULL);
 	}
 	return TCL_ERROR;
     }
@@ -1685,7 +1685,7 @@ TtyParseMode(
 	if (interp != NULL) {
 	    Tcl_SetObjResult(interp, Tcl_ObjPrintf(
 		    "%s stop: should be 1 or 2", bad));
-	    Tcl_SetErrorCode(interp, "TCL", "VALUE", "SERIALMODE", (void *)NULL);
+	    Tcl_SetErrorCode(interp, "TCL", "VALUE", "SERIALMODE", (char *)NULL);
 	}
 	return TCL_ERROR;
     }
@@ -1792,7 +1792,7 @@ TclpOpenFileChannel(
 	if (interp != (Tcl_Interp *) NULL) {
 	    Tcl_AppendResult(interp, "couldn't open \"",
 	    TclGetString(pathPtr), "\": filename is invalid on this platform",
-	    (void *)NULL);
+	    (char *)NULL);
 	}
 	return NULL;
     }
@@ -2085,13 +2085,13 @@ Tcl_GetOpenFile(
 	Tcl_SetObjResult(interp, Tcl_ObjPrintf(
 		"\"%s\" wasn't opened for writing", chanID));
 	Tcl_SetErrorCode(interp, "TCL", "VALUE", "CHANNEL", "NOT_WRITABLE",
-		(void *)NULL);
+		(char *)NULL);
 	return TCL_ERROR;
     } else if (!forWriting && !(chanMode & TCL_READABLE)) {
 	Tcl_SetObjResult(interp, Tcl_ObjPrintf(
 		"\"%s\" wasn't opened for reading", chanID));
 	Tcl_SetErrorCode(interp, "TCL", "VALUE", "CHANNEL", "NOT_READABLE",
-		(void *)NULL);
+		(char *)NULL);
 	return TCL_ERROR;
     }
 
@@ -2123,7 +2123,7 @@ Tcl_GetOpenFile(
 		Tcl_SetObjResult(interp, Tcl_ObjPrintf(
 			"cannot get a FILE * for \"%s\"", chanID));
 		Tcl_SetErrorCode(interp, "TCL", "VALUE", "CHANNEL",
-			"FILE_FAILURE", (void *)NULL);
+			"FILE_FAILURE", (char *)NULL);
 		return TCL_ERROR;
 	    }
 	    *filePtr = f;
@@ -2134,7 +2134,7 @@ Tcl_GetOpenFile(
     Tcl_SetObjResult(interp, Tcl_ObjPrintf(
 	    "\"%s\" cannot be used to get a FILE *", chanID));
     Tcl_SetErrorCode(interp, "TCL", "VALUE", "CHANNEL", "NO_DESCRIPTOR",
-	    (void *)NULL);
+	    (char *)NULL);
     return TCL_ERROR;
 }
 
diff --git a/unix/tclUnixFCmd.c b/unix/tclUnixFCmd.c
index 08b9d27..b65cdb1 100644
--- a/unix/tclUnixFCmd.c
+++ b/unix/tclUnixFCmd.c
@@ -1532,7 +1532,7 @@ SetGroupAttribute(
 			" group \"%s\" does not exist",
 			TclGetString(fileName), string));
 		Tcl_SetErrorCode(interp, "TCL", "OPERATION", "SETGRP",
-			"NO_GROUP", (void *)NULL);
+			"NO_GROUP", (char *)NULL);
 	    }
 	    return TCL_ERROR;
 	}
@@ -1603,7 +1603,7 @@ SetOwnerAttribute(
 			" user \"%s\" does not exist",
 			TclGetString(fileName), string));
 		Tcl_SetErrorCode(interp, "TCL", "OPERATION", "SETOWN",
-			"NO_USER", (void *)NULL);
+			"NO_USER", (char *)NULL);
 	    }
 	    return TCL_ERROR;
 	}
@@ -1698,7 +1698,7 @@ SetPermissionsAttribute(
 		Tcl_SetObjResult(interp, Tcl_ObjPrintf(
 			"unknown permission string format \"%s\"",
 			modeStringPtr));
-		Tcl_SetErrorCode(interp, "TCL", "VALUE", "PERMISSION", (void *)NULL);
+		Tcl_SetErrorCode(interp, "TCL", "VALUE", "PERMISSION", (char *)NULL);
 	    }
 	    return TCL_ERROR;
 	}
diff --git a/unix/tclUnixNotfy.c b/unix/tclUnixNotfy.c
index 402e04f..984ee2f 100644
--- a/unix/tclUnixNotfy.c
+++ b/unix/tclUnixNotfy.c
@@ -131,12 +131,12 @@ TclpAlertNotifier(
     if (write(tsdPtr->triggerEventFd, &eventFdVal,
 	    sizeof(eventFdVal)) != sizeof(eventFdVal)) {
 	Tcl_Panic("Tcl_AlertNotifier: unable to write to %p->triggerEventFd",
-		(void *) tsdPtr);
+		tsdPtr);
     }
 #else
     if (write(tsdPtr->triggerPipe[1], "", 1) != 1) {
 	Tcl_Panic("Tcl_AlertNotifier: unable to write to %p->triggerPipe",
-		(void *) tsdPtr);
+		tsdPtr);
     }
 #endif /* NOTIFIER_EPOLL && HAVE_EVENTFD */
 #endif /* NOTIFIER_SELECT */
@@ -484,7 +484,7 @@ AtForkChild(void)
  *
  * TclpNotifierData --
  *
- *	This function returns a ClientData pointer to be associated
+ *	This function returns a void pointer to be associated
  *	with a Tcl_AsyncHandler.
  *
  * Results:
@@ -503,7 +503,7 @@ TclpNotifierData(void)
 #if defined(NOTIFIER_EPOLL) || defined(NOTIFIER_KQUEUE)
     ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
 
-    return (void *) tsdPtr;
+    return tsdPtr;
 #else
     return NULL;
 #endif
diff --git a/unix/tclUnixTest.c b/unix/tclUnixTest.c
index cdb1caa..7fe62f7 100644
--- a/unix/tclUnixTest.c
+++ b/unix/tclUnixTest.c
@@ -164,7 +164,7 @@ TestfilehandlerCmd(
 	    return TCL_ERROR;
 	}
 	if (i >= MAX_PIPES) {
-	    Tcl_AppendResult(interp, "bad index ", objv[2], (void *)NULL);
+	    Tcl_AppendResult(interp, "bad index ", objv[2], (char *)NULL);
 	    return TCL_ERROR;
 	}
 	pipePtr = &testPipes[i];
@@ -193,7 +193,7 @@ TestfilehandlerCmd(
 	    return TCL_ERROR;
 	}
 	snprintf(buf, sizeof(buf), "%d %d", pipePtr->readCount, pipePtr->writeCount);
-	Tcl_AppendResult(interp, buf, (void *)NULL);
+	Tcl_AppendResult(interp, buf, (char *)NULL);
     } else if (strcmp(Tcl_GetString(objv[1]), "create") == 0) {
 	if (objc != 5) {
 	    Tcl_WrongNumArgs(interp, 2, objv, "index readMode writeMode");
@@ -202,7 +202,7 @@ TestfilehandlerCmd(
 	if (pipePtr->readFile == NULL) {
 	    if (!TclpCreatePipe(&pipePtr->readFile, &pipePtr->writeFile)) {
 		Tcl_AppendResult(interp, "couldn't open pipe: ",
-			Tcl_PosixError(interp), (void *)NULL);
+			Tcl_PosixError(interp), (char *)NULL);
 		return TCL_ERROR;
 	    }
 #ifdef O_NONBLOCK
@@ -210,7 +210,7 @@ TestfilehandlerCmd(
 	    fcntl(GetFd(pipePtr->writeFile), F_SETFL, O_NONBLOCK);
 #else
 	    Tcl_AppendResult(interp, "can't make pipes non-blocking",
-		    (void *)NULL);
+		    (char *)NULL);
 	    return TCL_ERROR;
 #endif
 	}
@@ -226,7 +226,7 @@ TestfilehandlerCmd(
 	    Tcl_CreateFileHandler(GetFd(pipePtr->readFile), 0,
 		    TestFileHandlerProc, pipePtr);
 	} else {
-	    Tcl_AppendResult(interp, "bad read mode \"", Tcl_GetString(objv[3]), "\"", (void *)NULL);
+	    Tcl_AppendResult(interp, "bad read mode \"", Tcl_GetString(objv[3]), "\"", (char *)NULL);
 	    return TCL_ERROR;
 	}
 	if (strcmp(Tcl_GetString(objv[4]), "writable") == 0) {
@@ -238,7 +238,7 @@ TestfilehandlerCmd(
 	    Tcl_CreateFileHandler(GetFd(pipePtr->writeFile), 0,
 		    TestFileHandlerProc, pipePtr);
 	} else {
-	    Tcl_AppendResult(interp, "bad read mode \"", Tcl_GetString(objv[4]), "\"", (void *)NULL);
+	    Tcl_AppendResult(interp, "bad read mode \"", Tcl_GetString(objv[4]), "\"", (char *)NULL);
 	    return TCL_ERROR;
 	}
     } else if (strcmp(Tcl_GetString(objv[1]), "empty") == 0) {
@@ -270,7 +270,7 @@ TestfilehandlerCmd(
 
 	memset(buffer, 'b', 10);
 	TclFormatInt(buf, write(GetFd(pipePtr->writeFile), buffer, 10));
-	Tcl_AppendResult(interp, buf, (void *)NULL);
+	Tcl_AppendResult(interp, buf, (char *)NULL);
     } else if (strcmp(Tcl_GetString(objv[1]), "oneevent") == 0) {
 	Tcl_DoOneEvent(TCL_FILE_EVENTS|TCL_DONT_WAIT);
     } else if (strcmp(Tcl_GetString(objv[1]), "wait") == 0) {
@@ -279,7 +279,7 @@ TestfilehandlerCmd(
 	    return TCL_ERROR;
 	}
 	if (pipePtr->readFile == NULL) {
-	    Tcl_AppendResult(interp, "pipe ", Tcl_GetString(objv[2]), " doesn't exist", (void *)NULL);
+	    Tcl_AppendResult(interp, "pipe ", Tcl_GetString(objv[2]), " doesn't exist", (char *)NULL);
 	    return TCL_ERROR;
 	}
 	if (strcmp(Tcl_GetString(objv[3]), "readable") == 0) {
@@ -304,7 +304,7 @@ TestfilehandlerCmd(
     } else {
 	Tcl_AppendResult(interp, "bad option \"", Tcl_GetString(objv[1]),
 		"\": must be close, clear, counts, create, empty, fill, "
-		"fillpartial, oneevent, wait, or windowevent", (void *)NULL);
+		"fillpartial, oneevent, wait, or windowevent", (char *)NULL);
 	return TCL_ERROR;
     }
     return TCL_OK;
@@ -371,13 +371,13 @@ TestfilewaitCmd(
 	mask = TCL_WRITABLE|TCL_READABLE;
     } else {
 	Tcl_AppendResult(interp, "bad argument \"", Tcl_GetString(objv[2]),
-		"\": must be readable, writable, or both", (void *)NULL);
+		"\": must be readable, writable, or both", (char *)NULL);
 	return TCL_ERROR;
     }
     if (Tcl_GetChannelHandle(channel,
 	    (mask & TCL_READABLE) ? TCL_READABLE : TCL_WRITABLE,
 	    (void **) &data) != TCL_OK) {
-	Tcl_AppendResult(interp, "couldn't get channel file", (void *)NULL);
+	Tcl_AppendResult(interp, "couldn't get channel file", (char *)NULL);
 	return TCL_ERROR;
     }
     fd = PTR2INT(data);
@@ -469,7 +469,7 @@ TestforkCmd(
     pid = fork();
     if (pid == -1) {
         Tcl_AppendResult(interp,
-                "Cannot fork", (void *)NULL);
+                "Cannot fork", (char *)NULL);
         return TCL_ERROR;
     }
     /* Only needed when pthread_atfork is not present,
@@ -520,11 +520,11 @@ TestalarmCmd(
      */
 
     action.sa_handler = AlarmHandler;
-    memset((void *) &action.sa_mask, 0, sizeof(sigset_t));
+    memset((void *)&action.sa_mask, 0, sizeof(sigset_t));
     action.sa_flags = SA_RESTART;
 
     if (sigaction(SIGALRM, &action, NULL) < 0) {
-	Tcl_AppendResult(interp, "sigaction: ", Tcl_PosixError(interp), (void *)NULL);
+	Tcl_AppendResult(interp, "sigaction: ", Tcl_PosixError(interp), (char *)NULL);
 	return TCL_ERROR;
     }
     (void) alarm(sec);
@@ -533,7 +533,7 @@ TestalarmCmd(
 
     Tcl_AppendResult(interp,
 	    "warning: sigaction SA_RESTART not support on this platform",
-	    (void *)NULL);
+	    (char *)NULL);
     return TCL_ERROR;
 #endif
 }
@@ -584,7 +584,7 @@ TestgotsigCmd(
     TCL_UNUSED(int) /*objc*/,
     TCL_UNUSED(Tcl_Obj *const *))
 {
-    Tcl_AppendResult(interp, gotsig, (void *)NULL);
+    Tcl_AppendResult(interp, gotsig, (char *)NULL);
     gotsig = "0";
     return TCL_OK;
 }
@@ -636,7 +636,7 @@ TestchmodCmd(
 	}
 	if (chmod(translated, mode) != 0) {
 	    Tcl_AppendResult(interp, translated, ": ", Tcl_PosixError(interp),
-		    (void *)NULL);
+		    (char *)NULL);
 	    return TCL_ERROR;
 	}
 	Tcl_DStringFree(&buffer);
diff --git a/unix/tclXtTest.c b/unix/tclXtTest.c
index c6bcc18..ad7cb77 100644
--- a/unix/tclXtTest.c
+++ b/unix/tclXtTest.c
@@ -117,7 +117,7 @@ TesteventloopCmd(
 	framePtr = oldFramePtr;
     } else {
 	Tcl_AppendResult(interp, "bad option \"", Tcl_GetString(objv[1]),
-		"\": must be done or wait", (void *)NULL);
+		"\": must be done or wait", (char *)NULL);
 	return TCL_ERROR;
     }
     return TCL_OK;