Fix potential use of uninitialized variable flagged by clang static analyzer

4 files changed, 15 insertions, 14 deletions

diff --git a/generic/tkCanvPs.c b/generic/tkCanvPs.c
index 866ebba..43fc88a 100644
--- a/generic/tkCanvPs.c
+++ b/generic/tkCanvPs.c
@@ -11,7 +11,7 @@
  * See the file "license.terms" for information on usage and redistribution of
  * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  *
- * RCS: @(#) $Id: tkCanvPs.c,v 1.24 2008/12/05 16:58:41 das Exp $
+ * RCS: @(#) $Id: tkCanvPs.c,v 1.25 2008/12/07 16:34:12 das Exp $
  */
 
 #include "tkInt.h"
@@ -1255,7 +1255,7 @@ TkPostscriptImage(
      * monochrome screen, use gray or monochrome mode instead.
      */
 
-    if (!cdata.color && level == 2) {
+    if (!cdata.color && level >= 2) {
 	level = 1;
     }
 
@@ -1272,7 +1272,7 @@ TkPostscriptImage(
     switch (level) {
     case 0: bytesPerLine = (width + 7) / 8;  maxWidth = 240000; break;
     case 1: bytesPerLine = width;	     maxWidth = 60000;  break;
-    case 2: bytesPerLine = 3 * width;	     maxWidth = 20000;  break;
+    default: bytesPerLine = 3 * width;	     maxWidth = 20000;  break;
     }
 
     if (bytesPerLine > 60000) {
@@ -1300,7 +1300,7 @@ TkPostscriptImage(
 	    sprintf(buffer, "%d %d 8 matrix {\n<", width, rows);
 	    Tcl_AppendResult(interp, buffer, NULL);
 	    break;
-	case 2:
+	default:
 	    sprintf(buffer, "%d %d 8 matrix {\n<", width, rows);
 	    Tcl_AppendResult(interp, buffer, NULL);
 	    break;
@@ -1362,7 +1362,7 @@ TkPostscriptImage(
 		    }
 		}
 		break;
-	    case 2:
+	    default:
 		/*
 		 * Finally, color mode. Here, just output the red, green, and
 		 * blue values directly.
@@ -1388,7 +1388,7 @@ TkPostscriptImage(
 	switch (level) {
 	case 0: case 1:
 	    sprintf(buffer, ">\n} image\n"); break;
-	case 2:
+	default:
 	    sprintf(buffer, ">\n} false 3 colorimage\n"); break;
 	}
 	Tcl_AppendResult(interp, buffer, NULL);
@@ -1587,7 +1587,7 @@ Tk_PostscriptPhoto(
     switch (colorLevel) {
     case 0: bytesPerLine = (width + 7) / 8; maxWidth = 240000; break;
     case 1: bytesPerLine = width;	    maxWidth = 60000;  break;
-    case 2: bytesPerLine = 3 * width;	    maxWidth = 20000;  break;
+    default: bytesPerLine = 3 * width;	    maxWidth = 20000;  break;
     }
     if (bytesPerLine > 60000) {
 	Tcl_ResetResult(interp);
diff --git a/generic/tkFileFilter.c b/generic/tkFileFilter.c
index 94cdbcd..4e355d4 100644
--- a/generic/tkFileFilter.c
+++ b/generic/tkFileFilter.c
@@ -9,7 +9,7 @@
  * See the file "license.terms" for information on usage and redistribution of
  * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  *
- * RCS: @(#) $Id: tkFileFilter.c,v 1.11 2008/04/27 22:38:56 dkf Exp $
+ * RCS: @(#) $Id: tkFileFilter.c,v 1.12 2008/12/07 16:34:12 das Exp $
  */
 
 #include "tkInt.h"
@@ -338,7 +338,7 @@ AddClause(
 	    globPtr->next = NULL;
 	}
     }
-    if (ostypeCount > 0 && ostypeList != NULL) {
+    if (ostypeList != NULL && ostypeCount > 0) {
 	if (macRoman == NULL) {
 	    macRoman = Tcl_GetEncoding(NULL, "macRoman");
 	}
diff --git a/generic/tkFont.c b/generic/tkFont.c
index 961feac..0b67f56 100644
--- a/generic/tkFont.c
+++ b/generic/tkFont.c
@@ -10,7 +10,7 @@
  * See the file "license.terms" for information on usage and redistribution of
  * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  *
- * RCS: @(#) $Id: tkFont.c,v 1.50 2008/11/22 20:05:32 patthoyts Exp $
+ * RCS: @(#) $Id: tkFont.c,v 1.51 2008/12/07 16:34:12 das Exp $
  */
 
 #include "tkInt.h"
@@ -2675,7 +2675,7 @@ Tk_CharBbox(
 {
     TextLayout *layoutPtr;
     LayoutChunk *chunkPtr;
-    int i, x, w;
+    int i, x = 0, w;
     Tk_Font tkfont;
     TkFont *fontPtr;
     const char *end;
diff --git a/generic/tkListbox.c b/generic/tkListbox.c
index 72141b8..d15246c 100644
--- a/generic/tkListbox.c
+++ b/generic/tkListbox.c
@@ -11,7 +11,7 @@
  * See the file "license.terms" for information on usage and redistribution of
  * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  *
- * RCS: @(#) $Id: tkListbox.c,v 1.52 2008/11/08 22:52:29 dkf Exp $
+ * RCS: @(#) $Id: tkListbox.c,v 1.53 2008/12/07 16:34:12 das Exp $
  */
 
 #include "default.h"
@@ -1336,8 +1336,6 @@ ListboxYviewSubCmd(
     } else {
 	type = Tk_GetScrollInfoObj(interp, objc, objv, &fraction, &count);
 	switch (type) {
-	case TK_SCROLL_ERROR:
-	    return TCL_ERROR;
 	case TK_SCROLL_MOVETO:
 	    index = (int) (listPtr->nElements*fraction + 0.5);
 	    break;
@@ -1351,6 +1349,9 @@ ListboxYviewSubCmd(
 	case TK_SCROLL_UNITS:
 	    index = listPtr->topIndex + count;
 	    break;
+	case TK_SCROLL_ERROR:
+	default:
+	    return TCL_ERROR;
 	}
 	ChangeListboxView(listPtr, index);
     }