From 2b315fe020ab47acb0835aa6395d3e31d43756b2 Mon Sep 17 00:00:00 2001 From: itd Date: Sun, 13 Mar 2022 21:08:03 +0100 Subject: gnu: python-mypy: Fix test errors on i686-linux. MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit * gnu/packages/patches/python-mypy-12332.patch: New patch. * gnu/local.mk (dist_patch_DATA): Add it. * gnu/packages/python-check.scm (python-mypy)[source]: Use patch "python-mypy-12332.patch" to avoid overflow issues resulting in test failures. Signed-off-by: Ludovic Courtès --- gnu/packages/patches/python-mypy-12332.patch | 68 ++++++++++++++++++++++++++++ 1 file changed, 68 insertions(+) create mode 100644 gnu/packages/patches/python-mypy-12332.patch (limited to 'gnu/packages/patches') diff --git a/gnu/packages/patches/python-mypy-12332.patch b/gnu/packages/patches/python-mypy-12332.patch new file mode 100644 index 0000000000..d43cf42ed1 --- /dev/null +++ b/gnu/packages/patches/python-mypy-12332.patch @@ -0,0 +1,68 @@ +From 518c864805dd93e62d59439e665a0ce9d6778419 Mon Sep 17 00:00:00 2001 +From: Ekin Dursun +Date: Thu, 10 Mar 2022 22:06:48 +0300 +Subject: [PATCH] mypyc: Fix overflow in id function (CPyTagged_Id) + +In CPython, the id of an object is its address. It's computed by +converting the pointer to an unsigned integer (PyLong_FromVoidPtr). A +similar logic is present here, pointer is converted to a Py_ssize_t and +CPyTagged_FromSsize_t is called with that integer. + +There is a problem with that approach: Py_ssize_t cannot hold every +pointer value. Sometimes overflow happens and CPyTagged_FromSsize_t is +called with a negative integer. + +With the new approach, the number is checked: If it fits in a +Py_ssize_t, CPyTagged_FromSsize_t is called. If not, it is directly +converted to a PyObject using PyLong_FromVoidPtr. +--- + mypyc/lib-rt/CPy.h | 1 + + mypyc/lib-rt/int_ops.c | 9 +++++++++ + mypyc/lib-rt/misc_ops.c | 2 +- + 3 files changed, 11 insertions(+), 1 deletion(-) + +diff --git a/mypyc/lib-rt/CPy.h b/mypyc/lib-rt/CPy.h +index 987819154ab..9f5ae52d4e4 100644 +--- a/mypyc/lib-rt/CPy.h ++++ b/mypyc/lib-rt/CPy.h +@@ -121,6 +121,7 @@ static inline size_t CPy_FindAttrOffset(PyTypeObject *trait, CPyVTableItem *vtab + + + CPyTagged CPyTagged_FromSsize_t(Py_ssize_t value); ++CPyTagged CPyTagged_FromVoidPtr(void *ptr); + CPyTagged CPyTagged_FromObject(PyObject *object); + CPyTagged CPyTagged_StealFromObject(PyObject *object); + CPyTagged CPyTagged_BorrowFromObject(PyObject *object); +diff --git a/mypyc/lib-rt/int_ops.c b/mypyc/lib-rt/int_ops.c +index 1275f2c1057..edf06314161 100644 +--- a/mypyc/lib-rt/int_ops.c ++++ b/mypyc/lib-rt/int_ops.c +@@ -26,6 +26,15 @@ CPyTagged CPyTagged_FromSsize_t(Py_ssize_t value) { + } + } + ++CPyTagged CPyTagged_FromVoidPtr(void *ptr) { ++ if ((uintptr_t)ptr > PY_SSIZE_T_MAX) { ++ PyObject *object = PyLong_FromVoidPtr(ptr); ++ return ((CPyTagged)object) | CPY_INT_TAG; ++ } else { ++ return CPyTagged_FromSsize_t((Py_ssize_t)ptr); ++ } ++} ++ + CPyTagged CPyTagged_FromObject(PyObject *object) { + int overflow; + // The overflow check knows about CPyTagged's width +diff --git a/mypyc/lib-rt/misc_ops.c b/mypyc/lib-rt/misc_ops.c +index cebd1cf997f..dcce89d9072 100644 +--- a/mypyc/lib-rt/misc_ops.c ++++ b/mypyc/lib-rt/misc_ops.c +@@ -437,7 +437,7 @@ CPyPickle_GetState(PyObject *obj) + } + + CPyTagged CPyTagged_Id(PyObject *o) { +- return CPyTagged_FromSsize_t((Py_ssize_t)o); ++ return CPyTagged_FromVoidPtr(o); + } + + #define MAX_INT_CHARS 22 -- cgit 1.4.1