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gh-131591: Fix GENERATE_DEBUG_SECTION for clangcl on Windows #132112

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Merged
merged 4 commits into from
Apr 5, 2025
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gh-131591: Fix GENERATE_DEBUG_SECTION for clangcl on Windows #132112

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1835fbb
Fix GENERATE_DEBUG_SECTION for clangcl on Windows
chris-eibl Apr 5, 2025
fc18d45
Trigger Windows tail-call CI
chris-eibl Apr 5, 2025
7c4dcbe
Revert "Trigger Windows tail-call CI"
chris-eibl Apr 5, 2025
565366a
update ignored.tsv
chris-eibl Apr 5, 2025
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1 change: 1 addition & 0 deletions .github/workflows/tail-call.yml
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Original file line number Diff line number Diff line change
@@ -1,3 +1,4 @@
# TODO: remove - just triggering Windows tail-call CI
name: Tail calling interpreter
on:
pull_request:
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4 changes: 3 additions & 1 deletion Include/internal/pycore_debug_offsets.h
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Expand Up @@ -23,7 +23,9 @@ extern "C" {
declaration \
_GENERATE_DEBUG_SECTION_LINUX(name)

#if defined(MS_WINDOWS) && !defined(__clang__)
// Please note that section names are truncated to eight bytes
// on Windows!
#if defined(MS_WINDOWS)
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@Fidget-Spinner: clang-cl actually understands the __declspec and now we have the same section name without the . like for MSVC.

#define _GENERATE_DEBUG_SECTION_WINDOWS(name) \
_Pragma(Py_STRINGIFY(section(Py_STRINGIFY(name), read, write))) \
__declspec(allocate(Py_STRINGIFY(name)))
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2 changes: 1 addition & 1 deletion Modules/_asynciomodule.c
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Expand Up @@ -116,7 +116,7 @@ typedef struct _Py_AsyncioModuleDebugOffsets {
} asyncio_thread_state;
} Py_AsyncioModuleDebugOffsets;

GENERATE_DEBUG_SECTION(AsyncioDebug, Py_AsyncioModuleDebugOffsets AsyncioDebug)
GENERATE_DEBUG_SECTION(AsyncioDebug, Py_AsyncioModuleDebugOffsets _AsyncioDebug)
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@chris-eibl chris-eibl Apr 5, 2025 •
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Actually, this is the reason why clangcl failed with

error: symbol 'AsyncioDebug' is already defined

https://github.com/python/cpython/actions/runs/13288425017/job/37102791006#step:4:243

This also "syncs" with

cpython/Python/pylifecycle.c

Line 112 in ac14d4a

GENERATE_DEBUG_SECTION(PyRuntime, _PyRuntimeState _PyRuntime)

where _PyRuntime has a leading underscore, too.

= {.asyncio_task_object = {
.size = sizeof(TaskObj),
.task_name = offsetof(TaskObj, task_name),
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