Add test for issue #1942

tests/ImageSharp.Tests/Formats/Jpg/JpegDecoderTests.Metadata.cs

@@ -288,5 +288,17 @@ namespace SixLabors.ImageSharp.Tests.Formats.Jpg
                         Assert.Equal(72, imageInfo.Metadata.HorizontalResolution);
                         Assert.Equal(72, imageInfo.Metadata.VerticalResolution);
                     });
+
+        [Theory]
+        [WithFile(TestImages.Jpeg.Issues.InvalidIptcTag, PixelTypes.Rgba32)]
+        public void Decode_WithInvalidIptcTag_DoesNotThrowException<TPixel>(TestImageProvider<TPixel> provider)
+            where TPixel : unmanaged, IPixel<TPixel>
+        {
+            Exception ex = Record.Exception(() =>
+            {
+                using Image<TPixel> image = provider.GetImage(JpegDecoder);
+            });
+            Assert.Null(ex);
+        }
     }
 }

tests/ImageSharp.Tests/TestImages.cs

@@ -261,6 +261,7 @@ namespace SixLabors.ImageSharp.Tests
                 public const string WrongColorSpace = "Jpg/issues/Issue1732-WrongColorSpace.jpg";
                 public const string MalformedUnsupportedComponentCount = "Jpg/issues/issue-1900-malformed-unsupported-255-components.jpg";
                 public const string MultipleApp01932 = "Jpg/issues/issue-1932-app0-resolution.jpg";
+                public const string InvalidIptcTag = "Jpg/issues/Issue1942InvalidIptcTag.jpg";
 
                 public static class Fuzz
                 {

tests/Images/Input/Jpg/issues/Issue1942InvalidIptcTag.jpg

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:9c9db428c4d9d7d1aea6778f263d8deaeeabdcfa63c77ef6ce36ab0e47b364dd
+size 93374