You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
74 lines
2.6 KiB
74 lines
2.6 KiB
2 weeks ago
|
From FEDORA_PATCHES Mon Sep 17 00:00:00 2001
|
||
|
|
From: Bruno Larsen <blarsen@redhat.com>
|
||
|
|
Date: Wed, 22 Mar 2023 15:48:00 +0100
|
||
|
|
Subject: gdb-rhbz2155439-assert-failure-copy_type.patch
|
||
|
|
|
||
|
|
;; Backport "Fix assertion failure in copy_type"
|
||
|
|
;; (Tom Tromey, RHBZ2155439)
|
||
|
|
|
||
|
|
PR exp/20630 points out a simple way to cause an assertion failure in
|
||
|
|
copy_type -- but this was found in the wild a few times as well.
|
||
|
|
|
||
|
|
copy_type only works for objfile-owned types, but there isn't a deep
|
||
|
|
reason for this. This patch fixes the bug by updating copy_type to
|
||
|
|
work for any sort of type.
|
||
|
|
|
||
|
|
Better would perhaps be to finally implement type GC, but I still
|
||
|
|
haven't attempted this.
|
||
|
|
|
||
|
|
Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=20630
|
||
|
|
|
||
|
|
diff --git a/gdb/gdbtypes.c b/gdb/gdbtypes.c
|
||
|
|
--- a/gdb/gdbtypes.c
|
||
|
|
+++ b/gdb/gdbtypes.c
|
||
|
|
@@ -5504,27 +5504,24 @@ 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));
|
||
|
|
-
|
||
|
|
- new_type = alloc_type_copy (type);
|
||
|
|
+ struct 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;
|
||
|
|
}
|
||
|
|
diff --git a/gdb/testsuite/gdb.base/printcmds.exp b/gdb/testsuite/gdb.base/printcmds.exp
|
||
|
|
--- a/gdb/testsuite/gdb.base/printcmds.exp
|
||
|
|
+++ b/gdb/testsuite/gdb.base/printcmds.exp
|
||
|
|
@@ -733,6 +733,9 @@ proc test_print_array_constants {} {
|
||
|
|
gdb_test_escape_braces "print {{0,1,2},{3,4,5}}" " = {{0, 1, 2}, {3, 4, 5}}"
|
||
|
|
gdb_test "print {4,5,6}\[2\]" " = 6"
|
||
|
|
gdb_test "print *&{4,5,6}\[1\]" "Attempt to take address of value not located in memory."
|
||
|
|
+
|
||
|
|
+ # This used to cause a crash.
|
||
|
|
+ gdb_test "print {unsigned char[]}{65}" " = 65 'A'"
|
||
|
|
}
|
||
|
|
|
||
|
|
proc test_print_enums {} {
|