[glib/glib-2-58: 1/3] gobject/genums.c: fix flags validation

[Philip Withnall <pwithnall src gnome org>]

commit 6f8a12ca0faaebfb47a3f77b8f0441b95b0a045f
Author: Arthur Demchenkov <spinal by gmail com>
Date:   Sun Oct 14 05:03:42 2018 +0300

    gobject/genums.c: fix flags validation
    
    gint -> glong conversion causes flags to be invalid if the highest bit
    is set.
    
    Closes #1572

 gobject/genums.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)
---
diff --git a/gobject/genums.c b/gobject/genums.c
index 8212dd99d..aa27c6bb4 100644
--- a/gobject/genums.c
+++ b/gobject/genums.c
@@ -152,7 +152,10 @@ value_flags_enum_collect_value (GValue      *value,
                                GTypeCValue *collect_values,
                                guint        collect_flags)
 {
-  value->data[0].v_long = collect_values[0].v_int;
+  if (G_VALUE_HOLDS_ENUM (value))
+    value->data[0].v_long = collect_values[0].v_int;
+  else
+    value->data[0].v_ulong = (guint) collect_values[0].v_int;
 
   return NULL;
 }