Issue 24290: c_uint32 bitfields break structures (original) (raw)

Without diving into the details of your test program, I get the same results on a 64-bit Debian Python 2.7.9 as with a 64-bit OS X 2.7.10:

c_uint32 TESTS: Class Name exponent number Sign float binary repr IEEE754Float_u ('-0x7b', '0xbeb2aL', 0L, 69.95930480957031, ['0x42', '0x8b', '0xeb', '0x2a']) IEEE754Float_u ('-0x7b', '0xbeb2aL', 0L, 69.95930480957031, ['0x42', '0x8b', '0xeb', '0x2a']) AN575Float_uint ('0x0', '0xbeb2a', 0L, 1.094551427887186e-39, ['0x0', '0xb', '0xeb', '0x2a']) AN575Float_uint ('0x0', '0xbeb2a', 0L, 1.094551427887186e-39, ['0x0', '0xb', '0xeb', '0x2a']) AN575Float_uint ('-0x7b', '0xbeb2a', 0L, 1.094551427887186e-39, ['0x85', '0xb', '0xeb', '0x2a']) IEEE754Float_u ('-0x7b', '0xbeb2aL', 1L, -69.95930480957031, ['0xc2', '0x8b', '0xeb', '0x2a']) AN575Float_uint ('-0x7b', '0xbeb2a', 1L, 1.094551427887186e-39, ['0x85', '0x8b', '0xeb', '0x2a'])

But using the same OS X 2.7.10 in 32-bit mode, I get:

c_uint32 TESTS: Class Name exponent number Sign float binary repr IEEE754Float_u ('-0x7b', '0xbeb2aL', 0L, 69.95930480957031, ['0x42', '0x8b', '0xeb', '0x2a']) IEEE754Float_u ('-0x7b', '0xbeb2aL', 0L, 69.95930480957031, ['0x42', '0x8b', '0xeb', '0x2a']) AN575Float_uint ('-0x7b', '0xbeb2a', 0L, 69.95930480957031, ['0x85', '0xb', '0xeb', '0x2a']) AN575Float_uint ('-0x7b', '0xbeb2a', 0L, 69.95930480957031, ['0x85', '0xb', '0xeb', '0x2a']) AN575Float_uint ('-0x7b', '0xbeb2a', 0L, 69.95930480957031, ['0x85', '0xb', '0xeb', '0x2a']) IEEE754Float_u ('-0x7b', '0xbeb2aL', 1L, -69.95930480957031, ['0xc2', '0x8b', '0xeb', '0x2a']) AN575Float_uint ('-0x7b', '0xbeb2a', 1L, -69.95930480957031, ['0x85', '0x8b', '0xeb', '0x2a'])