[gdb/python] Note that python 3.6 assumes long long support

Starting with python 3.6, support for platforms without long long support
has been removed [1].

HAVE_LONG_LONG and PY_LONG_LONG are still defined, but only for compatibility,
so stop relying on them.

Tested on x86_64-linux.

Approved-By: Tom Tromey <tom@tromey.com>
[1] https://github.com/python/cpython/issues/72148

diff --git a/gdb/python/python-internal.h b/gdb/python/python-internal.h
index 5132ec15ba668abb42b0c9c6e8f338a8a4b3e549..3c450560b9f96e63c3ad85412cf8e928de3c06ab 100644 (file)
--- a/gdb/python/python-internal.h
+++ b/gdb/python/python-internal.h
@@ -102,13 +102,24 @@
 
 /* Python supplies HAVE_LONG_LONG and some `long long' support when it
    is available.  These defines let us handle the differences more
-   cleanly.  */
-#ifdef HAVE_LONG_LONG
+   cleanly.
+
+   Starting with python 3.6, support for platforms without long long support
+   has been removed [1].  HAVE_LONG_LONG and PY_LONG_LONG are still defined,
+   but only for compatibility, so we no longer rely on them.
+
+   [1] https://github.com/python/cpython/issues/72148.  */
+#if PY_VERSION_HEX >= 0x03060000 || defined (HAVE_LONG_LONG)
 
 #define GDB_PY_LL_ARG "L"
 #define GDB_PY_LLU_ARG "K"
+#if PY_VERSION_HEX >= 0x03060000
+typedef long long gdb_py_longest;
+typedef unsigned long long gdb_py_ulongest;
+#else
 typedef PY_LONG_LONG gdb_py_longest;
 typedef unsigned PY_LONG_LONG gdb_py_ulongest;
+#endif
 #define gdb_py_long_as_ulongest PyLong_AsUnsignedLongLong
 #define gdb_py_long_as_long_and_overflow PyLong_AsLongLongAndOverflow