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-rw-r--r--gnu/packages/patches/libepoxy-gl-null-checks.patch54
1 files changed, 54 insertions, 0 deletions
diff --git a/gnu/packages/patches/libepoxy-gl-null-checks.patch b/gnu/packages/patches/libepoxy-gl-null-checks.patch
new file mode 100644
index 0000000000..bdc4b05989
--- /dev/null
+++ b/gnu/packages/patches/libepoxy-gl-null-checks.patch
@@ -0,0 +1,54 @@
+This patch from <https://bugzilla.redhat.com/show_bug.cgi?id=1395366> adds NULL
+checks to avoid crashes when GL support is missing, as is the case when running
+Xvfb.
+
+Upstream issue: <https://github.com/anholt/libepoxy/issues/72>.
+
+diff -ur libepoxy-1.3.1/src/dispatch_common.c libepoxy-1.3.1/src/dispatch_common.c
+--- libepoxy-1.3.1/src/dispatch_common.c 2015-07-15 19:46:36.000000000 -0400
++++ libepoxy-1.3.1/src/dispatch_common.c 2016-11-16 09:03:52.809066247 -0500
+@@ -348,6 +348,8 @@
+ epoxy_extension_in_string(const char *extension_list, const char *ext)
+ {
+ const char *ptr = extension_list;
++ if (! ptr) return false;
++ if (! ext) return false;
+ int len = strlen(ext);
+
+ /* Make sure that don't just find an extension with our name as a prefix. */
+@@ -380,6 +382,7 @@
+
+ for (i = 0; i < num_extensions; i++) {
+ const char *gl_ext = (const char *)glGetStringi(GL_EXTENSIONS, i);
++ if (! gl_ext) return false;
+ if (strcmp(ext, gl_ext) == 0)
+ return true;
+ }
+diff -ur libepoxy-1.3.1/src/dispatch_egl.c libepoxy-1.3.1/src/dispatch_egl.c
+--- libepoxy-1.3.1/src/dispatch_egl.c 2015-07-15 19:46:36.000000000 -0400
++++ libepoxy-1.3.1/src/dispatch_egl.c 2016-11-16 08:40:34.069358709 -0500
+@@ -46,6 +46,7 @@
+ int ret;
+
+ version_string = eglQueryString(dpy, EGL_VERSION);
++ if (! version_string) return 0;
+ ret = sscanf(version_string, "%d.%d", &major, &minor);
+ assert(ret == 2);
+ return major * 10 + minor;
+diff -ur libepoxy-1.3.1/src/dispatch_glx.c libepoxy-1.3.1/src/dispatch_glx.c
+--- libepoxy-1.3.1/src/dispatch_glx.c 2015-07-15 19:46:36.000000000 -0400
++++ libepoxy-1.3.1/src/dispatch_glx.c 2016-11-16 08:41:03.065730370 -0500
+@@ -57,11 +57,13 @@
+ int ret;
+
+ version_string = glXQueryServerString(dpy, screen, GLX_VERSION);
++ if (! version_string) return 0;
+ ret = sscanf(version_string, "%d.%d", &server_major, &server_minor);
+ assert(ret == 2);
+ server = server_major * 10 + server_minor;
+
+ version_string = glXGetClientString(dpy, GLX_VERSION);
++ if (! version_string) return 0;
+ ret = sscanf(version_string, "%d.%d", &client_major, &client_minor);
+ assert(ret == 2);
+ client = client_major * 10 + client_minor;