gh-93696: Locate frozen module source with __file__ (#93697)

Co-authored-by: Kumar Aditya <59607654+kumaraditya303@users.noreply.github.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/Lib/pdb.py b/Lib/pdb.py
index b0acb1f..78d0ce5 100755
--- a/Lib/pdb.py
+++ b/Lib/pdb.py
@@ -1332,6 +1332,12 @@ class Pdb(bdb.Bdb, cmd.Cmd):
         if last is None:
             last = first + 10
         filename = self.curframe.f_code.co_filename
+        # gh-93696: stdlib frozen modules provide a useful __file__
+        # this workaround can be removed with the closure of gh-89815
+        if filename.startswith("<frozen"):
+            tmp = self.curframe.f_globals.get("__file__")
+            if isinstance(tmp, str):
+                filename = tmp
         breaklist = self.get_file_breaks(filename)
         try:
             lines = linecache.getlines(filename, self.curframe.f_globals)