components/python/python39/patches/21-sched_get_priority.patch

   1 https://github.com/python/cpython/pull/22374
   2
   3 From b415ba00a73229ad102d590226decea014be11cc Mon Sep 17 00:00:00 2001
   4 From: Jakub Kulik <kulikjak@gmail.com>
   5 Date: Fri, 6 Nov 2020 14:58:33 +0100
   6 Subject: [PATCH 4/4] Make the error checking more robust
   7
   8 ---
   9  Modules/posixmodule.c | 12 +++++++++---
  10  1 file changed, 9 insertions(+), 3 deletions(-)
  11
  12 diff --git a/Modules/posixmodule.c b/Modules/posixmodule.c
  13 index 82edeb39022b4..f8651d7f02bb4 100644
  14 --- a/Modules/posixmodule.c
  15 +++ b/Modules/posixmodule.c
  16 @@ -6347,8 +6347,10 @@ os_sched_get_priority_max_impl(PyObject *module, int policy)
  17  {
  18      int max;
  19
  20 +    /* make sure that errno is cleared before the call */
  21 +    errno = 0;
  22      max = sched_get_priority_max(policy);
  23 -    if (max < 0)
  24 +    if (max == -1 && errno == EINVAL)
  25          return posix_error();
  26      return PyLong_FromLong(max);
  27  }
  28 @@ -6366,8 +6368,12 @@ static PyObject *
  29  os_sched_get_priority_min_impl(PyObject *module, int policy)
  30  /*[clinic end generated code: output=7595c1138cc47a6d input=21bc8fa0d70983bf]*/
  31  {
  32 -    int min = sched_get_priority_min(policy);
  33 -    if (min < 0)
  34 +    int min;
  35 +
  36 +    /* make sure that errno is cleared before the call */
  37 +    errno = 0;
  38 +    min = sched_get_priority_min(policy);
  39 +    if (min == -1 && errno == EINVAL)
  40          return posix_error();
  41      return PyLong_FromLong(min);
  42  }
  43