From cb1bac4dfdb1811a0ed06d26409d6474c6160ef4 Mon Sep 17 00:00:00 2001
From: Peter Andreas Entschev <peter@entschev.com>
Date: Thu, 30 Apr 2026 02:56:48 -0700
Subject: [PATCH 1/2] Skip stack trace if gdb is unavailable

---
 ci/timeout_with_stack.py | 51 +++++++++++++++++++++++++---------------
 1 file changed, 32 insertions(+), 19 deletions(-)

diff --git a/ci/timeout_with_stack.py b/ci/timeout_with_stack.py
index c38f729f0..994c51a74 100644
--- a/ci/timeout_with_stack.py
+++ b/ci/timeout_with_stack.py
@@ -23,6 +23,7 @@
 
 import argparse
 import os
+import shutil
 import signal
 import subprocess
 import sys
@@ -109,26 +110,38 @@ def capture_stack_trace(pid: int, stack_type=StackType.C) -> None:
     else:
         bt_command = "thread apply all py-bt"
         print(f"\nCapturing Python stack trace for process {pid}:")
-    proc = subprocess.run(
-        [
-            "gdb",
-            "--quiet",
-            "--pid",
-            str(pid),
-            "-ex",
-            "set pagination off",
-            "-ex",
-            "set confirm off",
-            "-ex",
-            bt_command,
-            "-ex",
-            "quit",
-        ],
-        capture_output=True,
-        text=True,
-        check=False,
-    )
+    gdb = shutil.which("gdb")
+    if gdb is None:
+        print(f"Skipping stack trace for process {pid}: gdb not found")
+        return
+
+    try:
+        proc = subprocess.run(
+            [
+                gdb,
+                "--quiet",
+                "--pid",
+                str(pid),
+                "-ex",
+                "set pagination off",
+                "-ex",
+                "set confirm off",
+                "-ex",
+                bt_command,
+                "-ex",
+                "quit",
+            ],
+            capture_output=True,
+            text=True,
+            check=False,
+        )
+    except FileNotFoundError:
+        print(f"Skipping stack trace for process {pid}: gdb not found")
+        return
+
     print(proc.stdout)
+    if proc.stderr:
+        print(proc.stderr, file=sys.stderr)
 
 
 def capture_all_stacks(pid: int, *, enable_python: bool = False) -> None:

From 9149fbcc937ac21e6eac9d3598e5b9f23eea8932 Mon Sep 17 00:00:00 2001
From: Peter Andreas Entschev <peter@entschev.com>
Date: Tue, 12 May 2026 11:49:50 -0700
Subject: [PATCH 2/2] Do not raise FileNotFoundError when gdb is not found

---
 ci/timeout_with_stack.py | 42 ++++++++++++++++++----------------------
 1 file changed, 19 insertions(+), 23 deletions(-)

diff --git a/ci/timeout_with_stack.py b/ci/timeout_with_stack.py
index 994c51a74..d2dfa700a 100644
--- a/ci/timeout_with_stack.py
+++ b/ci/timeout_with_stack.py
@@ -115,29 +115,25 @@ def capture_stack_trace(pid: int, stack_type=StackType.C) -> None:
         print(f"Skipping stack trace for process {pid}: gdb not found")
         return
 
-    try:
-        proc = subprocess.run(
-            [
-                gdb,
-                "--quiet",
-                "--pid",
-                str(pid),
-                "-ex",
-                "set pagination off",
-                "-ex",
-                "set confirm off",
-                "-ex",
-                bt_command,
-                "-ex",
-                "quit",
-            ],
-            capture_output=True,
-            text=True,
-            check=False,
-        )
-    except FileNotFoundError:
-        print(f"Skipping stack trace for process {pid}: gdb not found")
-        return
+    proc = subprocess.run(
+        [
+            gdb,
+            "--quiet",
+            "--pid",
+            str(pid),
+            "-ex",
+            "set pagination off",
+            "-ex",
+            "set confirm off",
+            "-ex",
+            bt_command,
+            "-ex",
+            "quit",
+        ],
+        capture_output=True,
+        text=True,
+        check=False,
+    )
 
     print(proc.stdout)
     if proc.stderr: