2 files changed, 14 insertions, 0 deletions
diff --git a/pkgs/applications/graphics/photivo/default.nix b/pkgs/applications/graphics/photivo/default.nix
index 69bc36dea61c..0d1adcff6e83 100644
--- a/pkgs/applications/graphics/photivo/default.nix
+++ b/pkgs/applications/graphics/photivo/default.nix
@@ -18,6 +18,7 @@ stdenv.mkDerivation rec {
       name = "lensfun-0.3.patch";
       sha256 = "0ys45x4r4bjjlx0zpd5d56rgjz7k8gxili4r4k8zx3zfka4a3zwv";
     })
+    ./gcc6.patch
   ];
 
   postPatch = '' # kinda icky
diff --git a/pkgs/applications/graphics/photivo/gcc6.patch b/pkgs/applications/graphics/photivo/gcc6.patch
new file mode 100644
index 000000000000..e2eb795fc8e2
--- /dev/null
+++ b/pkgs/applications/graphics/photivo/gcc6.patch
@@ -0,0 +1,13 @@
+diff --git c/Sources/ptImage.cpp i/Sources/ptImage.cpp
+index 9c95093..623c157 100755
+--- c/Sources/ptImage.cpp
++++ i/Sources/ptImage.cpp
+@@ -5291,7 +5291,7 @@ ptImage* ptImage::Box(const uint16_t MaxRadius, float* Mask) {
+         NewRow = NewRow < 0? -NewRow : NewRow > Height1? Height1_2-NewRow : NewRow ;
+         NewRow *= m_Width;
+         for(j = -IntRadius; j <= IntRadius; j++) {
+-          if (Dist[abs(i)][abs(j)] < Radius) {
++          if (Dist[int16_t(abs(i))][int16_t(abs(j))] < Radius) {
+             NewCol = Col+j;
+             NewCol = NewCol < 0? -NewCol : NewCol > Width1? Width1_2-NewCol : NewCol ;
+