https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87253
Bug ID: 87253
Summary: Python test_ctypes fails when built with gcc 8.2
Product: gcc
Version: 8.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: kugan at gcc dot gnu.org
Target Milestone: ---
Python-2.7.15
Steps to reproduce error
In Python src directory:
./configure
make
./python Lib/test/regrtest.py -v test_ctypes
======================================================================
FAIL: test_struct_by_value (ctypes.test.test_win32.Structures)
----------------------------------------------------------------------
Traceback (most recent call last):
File
"/home/kugan.vivekanandarajah/Python-2.7.15/Lib/ctypes/test/test_win32.py",
line 113, in test_struct_by_value
self.assertEqual(ret.left, left.value)
AssertionError: -200 != 10
gdb ./python
b ReturnRect
r Lib/test/regrtest.py -v test_ctypesQuit
(gdb) p cp
$9 = {x = 15, y = 25}
(gdb) p fp
$10 = {x = 548534164448, y = 9890688}
cp and fp are the same as can be seen from below:
vi /home/kugan.vivekanandarajah/Python-2.7.15/Lib/ctypes/test/test_win32.py
+112
pt = POINT(15, 25)
...
ReturnRect = dll.ReturnRect
ReturnRect.argtypes = [c_int, RECT, POINTER(RECT), POINT, RECT,
POINTER(RECT), POINT, RECT]
....
ret = ReturnRect(i, rect, pointer(rect), pt, rect,
byref(rect), pt, rect)
gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/home/kugan.vivekanandarajah/install/usr/local/bin/../libexec/gcc/aarch64-unknown-linux-gnu/8.2.1/lto-wrapper
Target: aarch64-unknown-linux-gnu
Configured with: ../gcc/configure --disable-bootstrap
Thread model: posix
gcc version 8.2.1 20180907 (GCC)
