Comment 3 for bug 2058742

Fails for function alog.active_logger.logging_taskT and trace 2 whose heads are

(gdb) call debug(ti->head)
(code_label 48 573 49 152 (nil) [2 uses])

(gdb) call debug(ti->eh_head)
(insn 57 765 58 (set (reg/f:DI 14 %r14 [orig:74 _39 ] [74])
        (mem/f:DI (reg/f:DI 10 %r10 [orig:123 _task ] [123]) [0 _task_25(D)->parent+0 S8 A64])) "libalog-0.6.2/src/alog-active_logger.adb":252:33 discrim 2 1477 {*movdi_64}
     (expr_list:REG_EH_REGION (const_int 6 [0x6])
        (nil)))

Looking at the trace there exists no insn with a ARGS_SIZE note which is why

gcc_assert (!ti->args_size_undefined || ti->args_size_defined_for_eh);

fails.