Tcl Source Code

     * This field is checked in Tcl_EvalObj and ObjInterpProc, and code whose
     * compilation epoch doesn't match is recompiled.
     */

    if (cmdPtr->compileProc != NULL) {
	iPtr->compileEpoch++;
    }














    if (cmdPtr->deleteProc != NULL) {
	/*
	 * Delete the command's client data. If this was an imported command
	 * created when a command was imported into a namespace, this client
	 * data will be a pointer to a ImportedCmdData structure describing
	 * the "real" command that this imported command refers to.
	 *
	 * If you are getting a crash during the call to deleteProc and
	 * cmdPtr->deleteProc is a pointer to the function free(), the most
	 * likely cause is that your extension allocated memory for the
	 * clientData argument to Tcl_CreateObjCommand with the ckalloc()
	 * macro and you are now trying to deallocate this memory with free()
	 * instead of ckfree(). You should pass a pointer to your own method
	 * that calls ckfree().
	 */

	cmdPtr->deleteProc(cmdPtr->deleteData);
    }

    /*
     * If this command was imported into other namespaces, then imported
     * commands were created that refer back to this command. Delete these
     * imported commands now.
     */
    if (!(cmdPtr->flags & CMD_REDEF_IN_PROGRESS)) {
	for (refPtr = cmdPtr->importRefPtr; refPtr != NULL;
		refPtr = nextRefPtr) {
	    nextRefPtr = refPtr->nextPtr;
	    importCmd = (Tcl_Command) refPtr->importedCmdPtr;
	    Tcl_DeleteCommandFromToken(interp, importCmd);
	}
    }

    /*
     * Don't use hPtr to delete the hash entry here, because it's possible
     * that the deletion callback renamed the command. Instead, use
     * cmdPtr->hptr, and make sure that no-one else has already deleted the
     * hash entry.