fix several amiga frontend warnings

frontends/amiga/Makefile

@@ -31,6 +31,8 @@ ifeq ($(SUBTARGET),os3)
   LDFLAGS += -lamiga -lm
 endif
 
+COMMON_WARNFLAGS += -Wno-cast-align
+
 EXETARGET := NetSurf
 
 # The filter and target for split messages

frontends/amiga/bitmap.c

@@ -531,10 +531,13 @@ static inline struct BitMap *ami_bitmap_get_generic(struct bitmap *bitmap,
 				}
 
 				ami_bitmap_rgba_to_argb(bitmap);
-				if(bitmap->drawhandle = ObtainDrawHandle(NULL,
-										&rp, scrn->ViewPort.ColorMap,
-										GGFX_DitherMode, dithermode,
-										TAG_DONE)) {
+				bitmap->drawhandle = ObtainDrawHandle(
+					NULL,
+					&rp,
+					scrn->ViewPort.ColorMap,
+					GGFX_DitherMode, dithermode,
+					TAG_DONE);
+				if(bitmap->drawhandle) {
 					APTR ddh = CreateDirectDrawHandle(bitmap->drawhandle,
 											bitmap->width, bitmap->height,
 											width, height, NULL);

frontends/amiga/corewindow.c

@@ -68,17 +68,19 @@
 #include "amiga/utf8.h"
 
 static void
-ami_cw_scroller_top(struct ami_corewindow *ami_cw, ULONG *restrict x, ULONG *restrict y)
+ami_cw_scroller_top(struct ami_corewindow *ami_cw,
+		    ULONG *restrict x,
+		    ULONG *restrict y)
 {
 	ULONG xs = 0;
 	ULONG ys = 0;
 
 	if(ami_cw->scroll_x_visible == true) {
-		GetAttr(SCROLLER_Top, ami_cw->objects[GID_CW_HSCROLL], (ULONG *)&xs);
+		GetAttr(SCROLLER_Top, ami_cw->objects[GID_CW_HSCROLL], &xs);
 	}
 
 	if(ami_cw->scroll_y_visible == true) {
-		GetAttr(SCROLLER_Top, ami_cw->objects[GID_CW_VSCROLL], (ULONG *)&ys);
+		GetAttr(SCROLLER_Top, ami_cw->objects[GID_CW_VSCROLL], &ys);
 	}
 
 	*x = xs;
@@ -243,15 +245,15 @@ ami_cw_redraw_rect(struct ami_corewindow *ami_cw, struct rect *r)
 
 	ami_cw_scroller_top(ami_cw, &pos_x, &pos_y);
 
-	if(x - pos_x + width > bbox->Width) width = bbox->Width - (x - pos_x);
-	if(y - pos_y + height > bbox->Height) height = bbox->Height - (y - pos_y);
+	if(x - (LONG)pos_x + width > bbox->Width) width = bbox->Width - (x - pos_x);
+	if(y - (LONG)pos_y + height > bbox->Height) height = bbox->Height - (y - pos_y);
 
-	if(x < pos_x) {
+	if(x < (LONG)pos_x) {
 		width -= pos_x - x;
 		x = pos_x;
 	}
 
-	if(y < pos_y) {
+	if(y < (LONG)pos_y) {
 		height -= pos_y - y;
 		y = pos_y;
 	}
@@ -880,9 +882,9 @@ ami_cw_scroll_visible(struct core_window *cw, const struct rect *r)
 	win_y1 = win_y0 + win_h;
 
 	if(r->y1 > win_y1) scrollsety = r->y1 - win_h;
-	if(r->y0 < win_y0) scrollsety = r->y0;
+	if(r->y0 < (LONG)win_y0) scrollsety = r->y0;
 	if(r->x1 > win_x1) scrollsetx = r->x1 - win_w;
-	if(r->x0 < win_x0) scrollsetx = r->x0;
+	if(r->x0 < (LONG)win_x0) scrollsetx = r->x0;
 
 	if(ami_cw->scroll_y_visible == true) {
 		RefreshSetGadgetAttrs((APTR)ami_cw->objects[GID_CW_VSCROLL], ami_cw->win, NULL,

frontends/amiga/font_bullet.c

@@ -169,7 +169,9 @@ static nserror amiga_nsfont_width(const plot_font_style_t *fstyle,
 {
 	*width = ami_font_unicode_width(string, length, fstyle, 0, 0, false);
 
-	if(*width <= 0) *width == length; // fudge
+	if(*width <= 0) {
+		*width = length; /* fudge */
+	}
 
 	return NSERROR_OK;
 }

frontends/amiga/gui.c

@@ -783,7 +783,6 @@ static void ami_amiupdate(void)
 static nsurl *gui_get_resource_url(const char *path)
 {
 	char buf[1024];
-	char path2[1024];
 	nsurl *url = NULL;
 
 	if(ami_locate_resource(buf, path) == false)

frontends/amiga/history_local.h

@@ -16,8 +16,8 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef AMIGA_HISTORY_GLOBAL_H
-#define AMIGA_HISTORY_GLOBAL_H
+#ifndef AMIGA_HISTORY_LOCAL_H
+#define AMIGA_HISTORY_LOCAL_H
 
 struct gui_window;
 struct ami_history_local_window;