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-rw-r--r--gdb/ChangeLog5
-rw-r--r--gdb/dwarf2read.c9
2 files changed, 11 insertions, 3 deletions
diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 35072e8..55bdd14 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,5 +1,10 @@
2018-04-17 Tom Tromey <tom@tromey.com>
+ * dwarf2read.c (quirk_rust_enum): Conditionally drop the
+ discriminant field.
+
+2018-04-17 Tom Tromey <tom@tromey.com>
+
* dwarf2read.c (quirk_rust_enum): Handle unions correctly.
2018-04-17 Andreas Arnez <arnez@linux.vnet.ibm.com>
diff --git a/gdb/dwarf2read.c b/gdb/dwarf2read.c
index 0d3af00..4207e4c 100644
--- a/gdb/dwarf2read.c
+++ b/gdb/dwarf2read.c
@@ -10079,10 +10079,13 @@ quirk_rust_enum (struct type *type, struct objfile *objfile)
if (iter != discriminant_map.end ())
disc->discriminants[i] = iter->second;
- /* Remove the discriminant field. */
+ /* Remove the discriminant field, if it exists. */
struct type *sub_type = TYPE_FIELD_TYPE (union_type, i);
- --TYPE_NFIELDS (sub_type);
- ++TYPE_FIELDS (sub_type);
+ if (TYPE_NFIELDS (sub_type) > 0)
+ {
+ --TYPE_NFIELDS (sub_type);
+ ++TYPE_FIELDS (sub_type);
+ }
TYPE_FIELD_NAME (union_type, i) = variant_name;
TYPE_NAME (sub_type)
= rust_fully_qualify (&objfile->objfile_obstack,