gh-140193: Forward port test_exec_set_nomemory_hang from 3.13

[yihong0618]

as discuss in #140103 (comment)

chore the test from branch 3.13 and need backport to 3.14

since main and 3.14 do not have the issue only test(so change the comments)

cc @ZeroIntensity

• Issue: Forward port gh-138491 tests to main and 3.14 #140193

[picnixz]

Can you make an issue for that change please?

[yihong0618]

Can you make an issue for that change please?

of course

---

Done

[ZeroIntensity]

LGTM, but let's run buildbots before merging this.

[bedevere-bot]

🤖 New build scheduled with the buildbot fleet by @ZeroIntensity for commit 3f31156 🤖

Results will be shown at:

https://buildbot.python.org/all/#/grid?branch=refs%2Fpull%2F140187%2Fmerge

If you want to schedule another build, you need to add the 🔨 test-with-buildbots label again.

[yihong0618]

LGTM, but let's run buildbots before merging this.

2000 is too long for windows...

[ZeroIntensity]

Can you figure out which number will get the f_lasti above 1024?

[yihong0618]

Can you figure out which number will get the f_lasti above 1024?

will do it tomorrow~ good night.

[yihong0618]

Can you figure out which number will get the f_lasti above 1024?

will be 60 times

for 59 times

[hyi@rocky cpython]$ gdb ./python
GNU gdb (Rocky Linux) 14.2-3.el9
Copyright (C) 2023 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
Type "show copying" and "show warranty" for details.
This GDB was configured as "aarch64-redhat-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<https://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
    <http://www.gnu.org/software/gdb/documentation/>.

For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from ./python...
warning: File "/home/hyi/cpython/python-gdb.py" auto-loading has been declined by your `auto-load safe-path' set to "$debugdir:$datadir/auto-load".
To enable execution of this file add
	add-auto-load-safe-path /home/hyi/cpython/python-gdb.py
line to your configuration file "/home/hyi/.gdbinit".
To completely disable this security protection add
	set auto-load safe-path /
line to your configuration file "/home/hyi/.gdbinit".
For more information about this security protection see the
"Auto-loading safe path" section in the GDB manual.  E.g., run from the shell:
	info "(gdb)Auto-loading safe path"
(gdb) b ceval.c:913 if $has_import_traceback()
Breakpoint 1 at 0x6ae4dc: file Python/ceval.c, line 913.
(gdb) set args ttt.py 
(gdb) run
Starting program: /home/hyi/cpython/python ttt.py 
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".

Breakpoint 1, _PyEval_EvalFrameDefault (tstate=0xaf5020 <_PyRuntime+299056>, frame=0xfffff7cf5020, throwflag=0) at Python/ceval.c:913
913	               PyObject *lasti = PyLong_FromLong(frame_lasti);
(gdb) p frame_lasti
$1 = 933

for 60 times

[hyi@rocky cpython]$ gdb ./python
GNU gdb (Rocky Linux) 14.2-3.el9
Copyright (C) 2023 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
Type "show copying" and "show warranty" for details.
This GDB was configured as "aarch64-redhat-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<https://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
    <http://www.gnu.org/software/gdb/documentation/>.

For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from ./python...
warning: File "/home/hyi/cpython/python-gdb.py" auto-loading has been declined by your `auto-load safe-path' set to "$debugdir:$datadir/auto-load".
To enable execution of this file add
	add-auto-load-safe-path /home/hyi/cpython/python-gdb.py
line to your configuration file "/home/hyi/.gdbinit".
To completely disable this security protection add
	set auto-load safe-path /
line to your configuration file "/home/hyi/.gdbinit".
For more information about this security protection see the
"Auto-loading safe path" section in the GDB manual.  E.g., run from the shell:
	info "(gdb)Auto-loading safe path"
(gdb) b ceval.c:913 if $has_import_traceback()
Breakpoint 1 at 0x6ae4dc: file Python/ceval.c, line 913.
(gdb) set args ttt.py 
(gdb) run
Starting program: /home/hyi/cpython/python ttt.py 
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
object address  : 0xfffff799fa80
object refcount : 3
object type     : 0xa7c730
object type name: MemoryError
object repr     : 
lost sys.stderr
object address  : 0xfffff799f9a0
object refcount : 3
object type     : 0xa7c730
object type name: MemoryError
object repr     : 
lost sys.stderr
object address  : 0xfffff799fa80
object refcount : 3
object type     : 0xa7c730
object type name: MemoryError
object repr     : 
lost sys.stderr
[Inferior 1 (process 109463) exited with code 01]
(gdb) 

for gdb script

python
import gdb

class has_import_traceback(gdb.Function):
    """Return 1 if 'import traceback' appears in py-bt output, else 0."""
    def __init__(self):
        super().__init__("has_import_traceback")

    def invoke(self):
        try:
            out = gdb.execute("py-bt", to_string=True)
        except gdb.error:
            return gdb.Value(0)
        return gdb.Value(1 if "import traceback" in out else 0)

has_import_traceback()
end