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bpo-47162: Add call trampoline to mitigate bad fpcasts on Emscripten (GH-32189)

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Christian Heimes 2022-03-30 22:28:33 +03:00 • committed by GitHub
parent 795c00b91c
commit 581c4434de
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8 changed files with 99 additions and 18 deletions
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12
Python/import.c
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@ -527,7 +527,7 @@ import_find_extension(PyThreadState *tstate, PyObject *name,
else {
if (def->m_base.m_init == NULL)
return NULL;
mod = def->m_base.m_init();
mod = _PyImport_InitFunc_TrampolineCall(def->m_base.m_init);
if (mod == NULL)
return NULL;
if (PyObject_SetItem(modules, name, mod) == -1) {
@ -958,6 +958,13 @@ PyImport_GetImporter(PyObject *path)
return get_path_importer(tstate, path_importer_cache, path_hooks, path);
}
#if defined(__EMSCRIPTEN__) && defined(PY_CALL_TRAMPOLINE)
#include <emscripten.h>
EM_JS(PyObject*, _PyImport_InitFunc_TrampolineCall, (PyModInitFunction func), {
return wasmTable.get(func)();
});
#endif // __EMSCRIPTEN__ && PY_CALL_TRAMPOLINE
static PyObject*
create_builtin(PyThreadState *tstate, PyObject *name, PyObject *spec)
{
@ -973,8 +980,7 @@ create_builtin(PyThreadState *tstate, PyObject *name, PyObject *spec)
/* Cannot re-init internal module ("sys" or "builtins") */
return PyImport_AddModuleObject(name);
}
mod = (*p->initfunc)();
mod = _PyImport_InitFunc_TrampolineCall(*p->initfunc);
if (mod == NULL) {
return NULL;
}