Print gdb version to ease debugging (#12836)

tests/stubtest_third_party.py

@@ -5,6 +5,7 @@
 
 import argparse
 import os
+import re
 import subprocess
 import sys
 import tempfile
@@ -204,13 +205,7 @@ def setup_gdb_stubtest_command(venv_dir: Path, stubtest_cmd: list[str]) -> bool:
  print_error("gdb is not supported on Windows")
  return False
 
- try:
- gdb_version = subprocess.check_output(["gdb", "--version"], text=True, stderr=subprocess.STDOUT)
- except FileNotFoundError:
- print_error("gdb is not installed")
- return False
- if "Python scripting is not supported in this copy of GDB" in gdb_version:
- print_error("Python scripting is not supported in this copy of GDB")
+ if not gdb_version_check():
  return False
 
  gdb_script = venv_dir / "gdb_stubtest.py"
@@ -277,6 +272,24 @@ def setup_gdb_stubtest_command(venv_dir: Path, stubtest_cmd: list[str]) -> bool:
  return True
 
 
+def gdb_version_check() -> bool:
+ try:
+ gdb_version_output = subprocess.check_output(["gdb", "--version"], text=True, stderr=subprocess.STDOUT)
+ except FileNotFoundError:
+ print_error("gdb is not installed")
+ return False
+ if "Python scripting is not supported in this copy of GDB" in gdb_version_output:
+ print_error("Python scripting is not supported in this copy of GDB")
+ return False
+ m = re.search(r"GNU gdb\s+.*?(\d+\.\d+(\.[\da-z-]+)+)", gdb_version_output)
+ if m is None:
+ print_error("Failed to determine gdb version:\n" + gdb_version_output)
+ return False
+ gdb_version = m.group(1)
+ print(f"({gdb_version}) ", end="", flush=True)
+ return True
+
+
 def setup_uwsgi_stubtest_command(dist: Path, venv_dir: Path, stubtest_cmd: list[str]) -> bool:
  """Perform some black magic in order to run stubtest inside uWSGI.