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gh-91048: Prevent optimizing away the asyncio debug offsets structure on Windows #132963

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Merged
merged 3 commits into from
Apr 25, 2025
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gh-91048: Prevent optimizing away the asyncio debug offsets structure on Windows #132963

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gh-91048: Prevent optimizing away the asyncio debug offsets structure…
pablogsal Apr 25, 2025
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pablogsal Apr 25, 2025
d327223
Update Modules/_asynciomodule.c
pablogsal Apr 25, 2025
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6 changes: 6 additions & 0 deletions Modules/_asynciomodule.c
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Original file line number Diff line number Diff line change
Expand Up @@ -185,6 +185,10 @@ typedef struct {
/* Counter for autogenerated Task names */
uint64_t task_name_counter;

/* Pointer to the asyncio debug offset to avoid it to be optimized away
by the compiler in Windows (other platforms don't need this) */
void *debug_offsets;
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Then we'd even do not need the __attribute__((used)) any longer in the GENERATE_DEBUG_SECTION macros.
But it doesn't hurt either - so let's keep it?

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Yeah I still prefer to keep it


} asyncio_state;

static inline asyncio_state *
Expand Down Expand Up @@ -4320,6 +4324,8 @@ module_init(asyncio_state *state)
goto fail;
}

state->debug_offsets = &_AsyncioDebug;

Py_DECREF(module);
return 0;

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