https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65800
Bug ID: 65800
Summary: gengtype aborts when run with -d (debug dump)
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: minor
Priority: P3
Component: other
Assignee: unassigned at gcc dot gnu.org
Reporter: maltsevm at gmail dot com
Running gengtype with the following parameters (from GCC build directory):
$ ./gcc/gengtype -r ./gcc/gtype.state -d
Triggers assertion failure:
typedefs:
pair: name = vec<ivarref_entry,va_gc>
Type at 0x1e59200:
kind = TYPE_USER_STRUCT
pointer_to = 0x1e592c0
gc_used = GC_POINTED_TO
u.s.tag = vec<ivarref_entry,va_gc>
fileloc: file = /home/miyuki/gcc/src/gcc/objc/objc-next-runtime-abi-02.c,
line = 2776
u.s.fields =
pair: name = va_gc
Type at 0x1e59520:
kind = TYPE_UNDEFINED
pointer_to = (nil)
gc_used = GC_UNUSED
gengtype: Internal error: abort in dump_type, at gengtype.c:4956
I noticed two situations, where this (i.e. presence of TYPE_UNDEFINED in dumps)
is possible: first, a combination of templates and typedefs (see comment for
function gengtype.c:set_gc_used_type). Second is rtl expressions with optional
fields (struct block_symbol in SYMBOL_REF).
