(Merge 3.4) Issue #22396: On 32-bit AIX platform, don't expose
os.posix_fadvise() nor os.posix_fallocate() because their prototypes in system
headers are wrong.
diff --git a/Misc/NEWS b/Misc/NEWS
index 6df7a6a..7ab2c77 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -38,6 +38,9 @@
Library
-------
+- Issue #22396: On 32-bit AIX platform, don't expose os.posix_fadvise() nor
+ os.posix_fallocate() because their prototypes in system headers are wrong.
+
- Issue #22517: When a io.BufferedRWPair object is deallocated, clear its
weakrefs.
diff --git a/Modules/posixmodule.c b/Modules/posixmodule.c
index 473fefa..aa2d63a 100644
--- a/Modules/posixmodule.c
+++ b/Modules/posixmodule.c
@@ -12708,7 +12708,16 @@
#endif /* HAVE_TRUNCATE */
-#ifdef HAVE_POSIX_FALLOCATE
+/* Issue #22396: On 32-bit AIX platform, the prototypes of os.posix_fadvise()
+ and os.posix_fallocate() in system headers are wrong if _LARGE_FILES is
+ defined, which is the case in Python on AIX. AIX bug report:
+ http://www-01.ibm.com/support/docview.wss?uid=isg1IV56170 */
+#if defined(_AIX) && defined(_LARGE_FILES) && !defined(__64BIT__)
+# define POSIX_FADVISE_AIX_BUG
+#endif
+
+
+#if defined(HAVE_POSIX_FALLOCATE) && !defined(POSIX_FADVISE_AIX_BUG)
/*[clinic input]
os.posix_fallocate
@@ -12771,10 +12780,10 @@
}
Py_RETURN_NONE;
}
-#endif /* HAVE_POSIX_FALLOCATE */
+#endif /* HAVE_POSIX_FALLOCATE) && !POSIX_FADVISE_AIX_BUG */
-#ifdef HAVE_POSIX_FADVISE
+#if defined(HAVE_POSIX_FADVISE) && !defined(POSIX_FADVISE_AIX_BUG)
/*[clinic input]
os.posix_fadvise
@@ -12849,7 +12858,7 @@
}
Py_RETURN_NONE;
}
-#endif /* HAVE_POSIX_FADVISE */
+#endif /* HAVE_POSIX_FADVISE && !POSIX_FADVISE_AIX_BUG */
#ifdef HAVE_PUTENV