shithub: rd

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elaborate diagnostics

--- a/egdi.c

+++ b/egdi.c

@@ -385,7 +385,7 @@

 			freeimage(img);

 		img = allocimage(display, r, chan, 0, DNofill);

 		if(img == nil)

-			sysfatal("%r");

+			return nil;

 		imgcache[cid][coff] = img;

 	}

 	return img;

@@ -425,7 +425,7 @@

 	if(p+size > ep)

 		sysfatal("cacheimage: size: %s", Eshort);

 	if((img = pickimage(cid, coff, r, chan)) == nil)

-		sysfatal("pickimage: %r");

+		sysfatal("cacheimage: pickimage: %r");

 	err = (zip? loadrle : loadbmp)(img, r, p, size, c->cmap);

 	if(err < 0)

 		sysfatal("%r");

@@ -496,7 +496,7 @@

 	if(p+size > ep)

 		sysfatal("cacheimage2: size: %s", Eshort);

 	if((img = pickimage(cid, coff, r, chan)) == nil)

-		sysfatal("pickimage: %r");

+		sysfatal("cacheimage2: pickimage: %r");

 	err = (zip? loadrle : loadbmp)(img, r, p, size, c->cmap);

 	if(err < 0)

 		sysfatal("%r");

--- a/rd.c

+++ b/rd.c

@@ -320,7 +320,7 @@

 			freeimage(img);

 		img = allocimage(display, rs, c->chan, 0, DNofill);

 		if(img == nil)

-			sysfatal("%r");

+			sysfatal("scanimgupdate: %r");

 	}

 	while(p<ep && nr>0){