From 811b14e555c23a063e1c1d0b17627a0484624234 Mon Sep 17 00:00:00 2001
From: "jan.nijtmans" <nijtmans@users.sourceforge.net>
Date: Fri, 21 Aug 2015 10:40:48 +0000
Subject: Eliminate some (harmless) compiler warnings. No functional change.

---
 generic/tclThread.c | 26 ++++++++++++++------------
 1 file changed, 14 insertions(+), 12 deletions(-)

diff --git a/generic/tclThread.c b/generic/tclThread.c
index 087d735..17071e5 100644
--- a/generic/tclThread.c
+++ b/generic/tclThread.c
@@ -24,7 +24,7 @@
 typedef struct {
     int num;		/* Number of objects remembered */
     int max;		/* Max size of the array */
-    char **list;	/* List of pointers */
+    void **list;	/* List of pointers */
 } SyncObjRecord;
 
 static SyncObjRecord keyRecord = {0, 0, NULL};
@@ -35,8 +35,8 @@ static SyncObjRecord condRecord = {0, 0, NULL};
  * Prototypes of functions used only in this file.
  */
 
-static void		ForgetSyncObject(char *objPtr, SyncObjRecord *recPtr);
-static void		RememberSyncObject(char *objPtr,
+static void		ForgetSyncObject(void *objPtr, SyncObjRecord *recPtr);
+static void		RememberSyncObject(void *objPtr,
 			    SyncObjRecord *recPtr);
 
 /*
@@ -94,7 +94,7 @@ Tcl_GetThreadData(
 	result = ckalloc((size_t) size);
 	memset(result, 0, (size_t) size);
 	*keyPtr = (Tcl_ThreadDataKey)result;
-	RememberSyncObject((char *) keyPtr, &keyRecord);
+	RememberSyncObject(keyPtr, &keyRecord);
     }
     result = * (void **) keyPtr;
 #endif /* TCL_THREADS */
@@ -153,10 +153,10 @@ TclThreadDataKeyGet(
 
 static void
 RememberSyncObject(
-    char *objPtr,		/* Pointer to sync object */
+    void *objPtr,		/* Pointer to sync object */
     SyncObjRecord *recPtr)	/* Record of sync objects */
 {
-    char **newList;
+    void **newList;
     int i, j;
 
 
@@ -178,7 +178,7 @@ RememberSyncObject(
 
     if (recPtr->num >= recPtr->max) {
 	recPtr->max += 8;
-	newList = (char **) ckalloc(recPtr->max * sizeof(char *));
+	newList = (void **) ckalloc(recPtr->max * sizeof(char *));
 	for (i=0,j=0 ; i<recPtr->num ; i++) {
 	    if (recPtr->list[i] != NULL) {
 		newList[j++] = recPtr->list[i];
@@ -214,7 +214,7 @@ RememberSyncObject(
 
 static void
 ForgetSyncObject(
-    char *objPtr,		/* Pointer to sync object */
+    void *objPtr,		/* Pointer to sync object */
     SyncObjRecord *recPtr)	/* Record of sync objects */
 {
     int i;
@@ -248,7 +248,7 @@ void
 TclRememberMutex(
     Tcl_Mutex *mutexPtr)
 {
-    RememberSyncObject((char *)mutexPtr, &mutexRecord);
+    RememberSyncObject(mutexPtr, &mutexRecord);
 }
 
 /*
@@ -276,7 +276,7 @@ Tcl_MutexFinalize(
     TclpFinalizeMutex(mutexPtr);
 #endif
     TclpMasterLock();
-    ForgetSyncObject((char *) mutexPtr, &mutexRecord);
+    ForgetSyncObject(mutexPtr, &mutexRecord);
     TclpMasterUnlock();
 }
 
@@ -303,7 +303,9 @@ void
 TclMutexUnlockAndFinalize(
     Tcl_Mutex *mutexPtr)
 {
+#ifdef TCL_THREADS
     Tcl_Mutex mutex;
+#endif
     TclpMasterLock();
     TclpMutexLock();
 #ifdef TCL_THREADS
@@ -338,7 +340,7 @@ void
 TclRememberCondition(
     Tcl_Condition *condPtr)
 {
-    RememberSyncObject((char *) condPtr, &condRecord);
+    RememberSyncObject(condPtr, &condRecord);
 }
 
 /*
@@ -366,7 +368,7 @@ Tcl_ConditionFinalize(
     TclpFinalizeCondition(condPtr);
 #endif
     TclpMasterLock();
-    ForgetSyncObject((char *) condPtr, &condRecord);
+    ForgetSyncObject(condPtr, &condRecord);
     TclpMasterUnlock();
 }
 
-- 
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