Possible regression on gdb.multi/multi-arch-exec.exp (was: Re: [PATCH] Use thread_info and inferior pointers more throughout)

[Keith Seitz]

On 06/27/2018 11:16 AM, Sergio Durigan Junior wrote:
>   ../../binutils-gdb/gdb/target.c:3200: internal-error: gdbarch* default_thread_architecture(target_ops*, ptid_t): Assertion `inf != NULL' failed.
>   A problem internal to GDB has been detected,
>   further debugging may prove unreliable.
>   Quit this debugging session? (y or n) FAIL: gdb.multi/multi-arch-exec.exp: first_arch=1: selected_thread=1: follow_exec_mode=new: continue across exec that changes architecture (GDB internal error)
> 

FWIW, I see this on HEAD on my F26 box in the test suite:

$ make check TESTS="gdb.multi/multi-arch-exec.exp gdb.base/foll-exec-mode.exp"
[snip]
FAIL: gdb.multi/multi-arch-exec.exp: first_arch=1: selected_thread=1: follow_exec_mode=new: continue across exec that changes architecture (GDB internal error)
ERROR: : spawn id exp10 not open
    while executing
"expect {
-i exp10 -timeout 10 
	    -re "Quit this debugging session\\? \\(y or n\\) $" {
		send_gdb "n\n"
		incr count
	    }
	    -re "Create a core..."
    ("uplevel" body line 1)
    invoked from within
"uplevel $body" NONE : spawn id exp10 not open
[snip]
		=== gdb Summary ===

# of expected passes		35
# of unexpected failures	8
# of unresolved testcases	13

Unlike Sergio, I haven't looked into this at all. ;-)

Keith