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-rw-r--r--Misc/NEWS2
-rw-r--r--Modules/posixmodule.c6
2 files changed, 8 insertions, 0 deletions
diff --git a/Misc/NEWS b/Misc/NEWS
index 6b2b41921f..0a6ddf49c0 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -34,6 +34,8 @@ Core and Builtins
Library
-------
+- Issue #27656: Do not assume sched.h defines any SCHED_* constants.
+
- Issue #27130: In the "zlib" module, fix handling of large buffers
(typically 4 GiB) when compressing and decompressing. Previously, inputs
were limited to 4 GiB, and compression and decompression operations did not
diff --git a/Modules/posixmodule.c b/Modules/posixmodule.c
index ee600fc237..b854cafb6f 100644
--- a/Modules/posixmodule.c
+++ b/Modules/posixmodule.c
@@ -12750,9 +12750,15 @@ all_ins(PyObject *m)
#endif
#ifdef HAVE_SCHED_H
+#ifdef SCHED_OTHER
if (PyModule_AddIntMacro(m, SCHED_OTHER)) return -1;
+#endif
+#ifdef SCHED_FIFO
if (PyModule_AddIntMacro(m, SCHED_FIFO)) return -1;
+#endif
+#ifdef SCHED_RR
if (PyModule_AddIntMacro(m, SCHED_RR)) return -1;
+#endif
#ifdef SCHED_SPORADIC
if (PyModule_AddIntMacro(m, SCHED_SPORADIC) return -1;
#endif