[Python-checkins] GH-96612: Skip incomplete frames in tracemalloc traces. (GH-96613)
markshannon
webhook-mailer at python.org
Tue Sep 6 12:37:56 EDT 2022
https://github.com/python/cpython/commit/95e271b2266b8f2e7b60ede86ccf3ede4a7f83eb
commit: 95e271b2266b8f2e7b60ede86ccf3ede4a7f83eb
branch: main
author: Mark Shannon <mark at hotpy.org>
committer: markshannon <mark at hotpy.org>
date: 2022-09-06T17:37:47+01:00
summary:
GH-96612: Skip incomplete frames in tracemalloc traces. (GH-96613)
files:
A Misc/NEWS.d/next/Core and Builtins/2022-09-06-14-26-36.gh-issue-96612.P4ZbeY.rst
M Lib/test/test_tracemalloc.py
M Modules/_tracemalloc.c
diff --git a/Lib/test/test_tracemalloc.py b/Lib/test/test_tracemalloc.py
index d2a5ede61e3f..94bcee302fe7 100644
--- a/Lib/test/test_tracemalloc.py
+++ b/Lib/test/test_tracemalloc.py
@@ -360,6 +360,20 @@ def test_fork(self):
else:
support.wait_process(pid, exitcode=0)
+ def test_no_incomplete_frames(self):
+ tracemalloc.stop()
+ tracemalloc.start(8)
+
+ def f(x):
+ def g():
+ return x
+ return g
+
+ obj = f(0).__closure__[0]
+ traceback = tracemalloc.get_object_traceback(obj)
+ self.assertIn("test_tracemalloc", traceback[-1].filename)
+ self.assertNotIn("test_tracemalloc", traceback[-2].filename)
+
class TestSnapshot(unittest.TestCase):
maxDiff = 4000
diff --git a/Misc/NEWS.d/next/Core and Builtins/2022-09-06-14-26-36.gh-issue-96612.P4ZbeY.rst b/Misc/NEWS.d/next/Core and Builtins/2022-09-06-14-26-36.gh-issue-96612.P4ZbeY.rst
new file mode 100644
index 000000000000..52e92703c9c4
--- /dev/null
+++ b/Misc/NEWS.d/next/Core and Builtins/2022-09-06-14-26-36.gh-issue-96612.P4ZbeY.rst
@@ -0,0 +1 @@
+Make sure that incomplete frames do not show up in tracemalloc traces.
diff --git a/Modules/_tracemalloc.c b/Modules/_tracemalloc.c
index ae09869deda7..44a1f7b673c0 100644
--- a/Modules/_tracemalloc.c
+++ b/Modules/_tracemalloc.c
@@ -400,7 +400,13 @@ traceback_get_frames(traceback_t *traceback)
}
_PyInterpreterFrame *pyframe = tstate->cframe->current_frame;
- for (; pyframe != NULL;) {
+ for (;;) {
+ while (pyframe && _PyFrame_IsIncomplete(pyframe)) {
+ pyframe = pyframe->previous;
+ }
+ if (pyframe == NULL) {
+ break;
+ }
if (traceback->nframe < _Py_tracemalloc_config.max_nframe) {
tracemalloc_get_frame(pyframe, &traceback->frames[traceback->nframe]);
assert(traceback->frames[traceback->nframe].filename != NULL);
@@ -410,8 +416,7 @@ traceback_get_frames(traceback_t *traceback)
traceback->total_nframe++;
}
- _PyInterpreterFrame *back = pyframe->previous;
- pyframe = back;
+ pyframe = pyframe->previous;
}
}
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