This is a backported patch from gdb. Without the patch, the following
crash command may abort due to an assertion failure in the gdb's
copy_type():
crash> px __per_cpu_start:0
gdbtypes.c:5505: internal-error: type* copy_type(const type*): Assertion `TYPE_OBJFILE_OWNED (type)' failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Quit this debugging session? (y or n)
The gdb commit 8e2da1651879 ("Fix assertion failure in copy_type"),
which solved the current issue.
Reported-by: Buland Kumar Singh <bsingh@xxxxxxxxxx>
Signed-off-by: Lianbo Jiang <lijiang@xxxxxxxxxx>
---
gdb-10.2.patch | 39 +++++++++++++++++++++++++++++++++++++++
1 file changed, 39 insertions(+)
diff --git a/gdb-10.2.patch b/gdb-10.2.patch
index 7055f6e0fb0b..aa34743501ad 100644
--- a/gdb-10.2.patch
+++ b/gdb-10.2.patch
@@ -2039,3 +2039,42 @@ exit 0
}
nextfield++;
}
+--- gdb-10.2/gdb/gdbtypes.c.orig
++++ gdb-10.2/gdb/gdbtypes.c
+@@ -5492,27 +5492,25 @@ copy_type_recursive (struct objfile *objfile,
+ }
+
+ /* Make a copy of the given TYPE, except that the pointer & reference
+- types are not preserved.
+-
+- This function assumes that the given type has an associated objfile.
+- This objfile is used to allocate the new type. */
++ types are not preserved. */
+
+ struct type *
+ copy_type (const struct type *type)
+ {
+- struct type *new_type;
+-
+- gdb_assert (TYPE_OBJFILE_OWNED (type));
++ struct type *new_type = alloc_type_copy (type);
+
+- new_type = alloc_type_copy (type);
+ TYPE_INSTANCE_FLAGS (new_type) = TYPE_INSTANCE_FLAGS (type);
+ TYPE_LENGTH (new_type) = TYPE_LENGTH (type);
+ memcpy (TYPE_MAIN_TYPE (new_type), TYPE_MAIN_TYPE (type),
+ sizeof (struct main_type));
+ if (type->main_type->dyn_prop_list != NULL)
+- new_type->main_type->dyn_prop_list
+- = copy_dynamic_prop_list (&TYPE_OBJFILE (type) -> objfile_obstack,
+- type->main_type->dyn_prop_list);
++ {
++ struct obstack *storage = (TYPE_OBJFILE_OWNED (type)
++ ? &TYPE_OBJFILE (type)->objfile_obstack
++ : gdbarch_obstack (TYPE_OWNER (type).gdbarch));
++ new_type->main_type->dyn_prop_list
++ = copy_dynamic_prop_list (storage, type->main_type->dyn_prop_list);
++ }
+
+ return new_type;
+ }
--
2.37.1
--
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