gnu: gd: Add fix for gd2_read test.

* gnu/packages/patches/gd-fix-gd2-read-test.patch: New file.
* gnu/local.mk (dist_patch_DATA): Add it.
* gnu/packages/gd.scm (gd)[source]: Add patch.

3 files changed, 17 insertions, 1 deletions

diff --git a/gnu/local.mk b/gnu/local.mk
index a0d9b8fe119..473197078de 100644
--- a/gnu/local.mk
+++ b/gnu/local.mk
@@ -514,6 +514,7 @@ dist_patch_DATA =						\
   %D%/packages/patches/gcc-cross-environment-variables.patch    \
   %D%/packages/patches/gcc-libvtv-runpath.patch                 \
   %D%/packages/patches/gcc-5.0-libvtv-runpath.patch             \
+  %D%/packages/patches/gd-fix-gd2-read-test.patch               \
   %D%/packages/patches/gd-fix-tests-on-i686.patch               \
   %D%/packages/patches/gegl-CVE-2012-4433.patch                 \
   %D%/packages/patches/geoclue-config.patch                     \
diff --git a/gnu/packages/gd.scm b/gnu/packages/gd.scm
index 153e1c7f8b6..b1bbc22cd71 100644
--- a/gnu/packages/gd.scm
+++ b/gnu/packages/gd.scm
@@ -50,7 +50,8 @@
              (sha256
               (base32
                "0g3xz8jpz1pl2zzmssglrpa9nxiaa7rmcmvgpbrjz8k9cyynqsvl"))
-             (patches (search-patches "gd-fix-tests-on-i686.patch"))))
+             (patches (search-patches "gd-fix-gd2-read-test.patch"
+                                      "gd-fix-tests-on-i686.patch"))))
     (build-system gnu-build-system)
     (native-inputs
      `(("pkg-config" ,pkg-config)))
diff --git a/gnu/packages/patches/gd-fix-gd2-read-test.patch b/gnu/packages/patches/gd-fix-gd2-read-test.patch
new file mode 100644
index 00000000000..65f39e44260
--- /dev/null
+++ b/gnu/packages/patches/gd-fix-gd2-read-test.patch
@@ -0,0 +1,14 @@
+Fix a 'maybe-uninitialized' warning (turned error)
+which occurs on non-Intel platforms.
+
+--- libgd-2.2.3/tests/gd2/gd2_read.c    2016-07-21 01:21:16.000000000 -0400
++++ libgd-2.2.3/tests/gd2/gd2_read.c    2016-07-29 15:52:03.806405312 -0400
+@@ -5,7 +5,7 @@
+ 
+ int main(int argc, char *argv[])
+ {
+-       int error, i = 0;
++       int error = 0, i = 0;
+        gdImagePtr im, exp;
+        FILE *fp;
+        char *path[] = {