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-rw-r--r--libdecor/build/fl_libdecor.c16
1 files changed, 15 insertions, 1 deletions
diff --git a/libdecor/build/fl_libdecor.c b/libdecor/build/fl_libdecor.c
index 702682718..4d480061a 100644
--- a/libdecor/build/fl_libdecor.c
+++ b/libdecor/build/fl_libdecor.c
@@ -23,6 +23,7 @@
#endif
#include <dlfcn.h>
+#include <stdlib.h>
static void *dlopen_corrected(const char *, int);
#define dlopen(A, B) dlopen_corrected(A, B)
#include "fl_libdecor.h"
@@ -126,8 +127,21 @@ struct libdecor *fl_libdecor_new(struct wl_display *wl_display, const struct lib
// no plug-in was found by dlopen(), use built-in plugin instead
// defined in the source code of the built-in plugin: libdecor-cairo.c or libdecor-gtk.c
extern const struct libdecor_plugin_description libdecor_plugin_description;
+#if HAVE_GTK
+ bool gdk_caution = false;
+ if (getenv("GDK_BACKEND") && strcmp(getenv("GDK_BACKEND"), "x11") == 0) {
+ // Environment variable GDK_BACKEND=x11 makes the .constructor below fail
+ // for the built-in GTK plugin and then FLTK crashes (#1029).
+ // Temporarily unset GDK_BACKEND to prevent that.
+ gdk_caution = true;
+ unsetenv("GDK_BACKEND");
+ }
+#endif
context->plugin = libdecor_plugin_description.constructor(context);
- }
+#if HAVE_GTK
+ if (gdk_caution) putenv("GDK_BACKEND=x11");
+#endif
+ }
wl_display_flush(wl_display);
return context;