From: Chris Eibl <138194463+chris-eibl@users.noreply.github.com>
Date: Wed, 3 Dec 2025 22:08:51 +0000 (+0100)
Subject: GH-142050: Jit stencils on Windows contain debug data (#142052)
X-Git-Tag: v3.15.0a3~212
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=618dc367146069f8f0aaeb0a4a7f1b834dc4a213;p=thirdparty%2FPython%2Fcpython.git

GH-142050: Jit stencils on Windows contain debug data (#142052)

Co-authored-by: Savannah Ostrowski <savannah@python.org>
---

diff --git a/Misc/NEWS.d/next/Build/2025-11-28-21-43-07.gh-issue-142050.PFi4tv.rst b/Misc/NEWS.d/next/Build/2025-11-28-21-43-07.gh-issue-142050.PFi4tv.rst
new file mode 100644
index 000000000000..8917d5df76e5
--- /dev/null
+++ b/Misc/NEWS.d/next/Build/2025-11-28-21-43-07.gh-issue-142050.PFi4tv.rst
@@ -0,0 +1 @@
+Fixed a bug where JIT stencils produced on Windows contained debug data. Patch by Chris Eibl.
diff --git a/Tools/jit/_schema.py b/Tools/jit/_schema.py
index c47e9af924a2..4e86abe60497 100644
--- a/Tools/jit/_schema.py
+++ b/Tools/jit/_schema.py
@@ -89,6 +89,7 @@ class COFFSection(typing.TypedDict):
     Characteristics: dict[
         typing.Literal["Flags"], list[dict[typing.Literal["Name"], str]]
     ]
+    Name: dict[typing.Literal["Value"], str]
     Number: int
     RawDataSize: int
     Relocations: list[dict[typing.Literal["Relocation"], COFFRelocation]]
diff --git a/Tools/jit/_targets.py b/Tools/jit/_targets.py
index a76d8ff27926..4c188d74a686 100644
--- a/Tools/jit/_targets.py
+++ b/Tools/jit/_targets.py
@@ -267,6 +267,10 @@ class _COFF(
     def _handle_section(
         self, section: _schema.COFFSection, group: _stencils.StencilGroup
     ) -> None:
+        name = section["Name"]["Value"]
+        if name == ".debug$S":
+            # skip debug sections
+            return
         flags = {flag["Name"] for flag in section["Characteristics"]["Flags"]}
         if "SectionData" in section:
             section_data_bytes = section["SectionData"]["Bytes"]