find_trim: fix a crash when enabling line_art mode (libvips#3630)

euzada · Sep 10, 2023 · d9a2a04 · d9a2a04
1 parent 52f9efa
commit d9a2a04
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Showing 2 changed files with 3 additions and 2 deletions.
diff --git a/libvips/arithmetic/find_trim.c b/libvips/arithmetic/find_trim.c
@@ -127,8 +127,8 @@ vips_find_trim_build(VipsObject *object)
 	if (!find_trim->line_art) {
 		if (vips_median(in, &t[1], 3, NULL))
 			return -1;
+		in = t[1];
 	}
-	in = t[1];
 
 	/* Smooth, find difference from bg, abs, threshold.
 	 */

diff --git a/test/test-suite/test_arithmetic.py b/test/test-suite/test_arithmetic.py
@@ -696,7 +696,8 @@ def test_find_trim(self):
                 assert height == 60
 
             test_rgb = test.bandjoin([test, test])
-            left, top, width, height = test_rgb.find_trim(background=[255, 255,
+            left, top, width, height = test_rgb.find_trim(line_art=True,
+                                                          background=[255, 255,
                                                                       255])
             assert left == 10
             assert top == 20