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2d1653aa43
Ctypes currently produces wrong pep3118 type codes for several types.
E.g. memoryview(ctypes.c_long()).format gives "<l" on 64-bit platforms,
but it should be "<q" instead for sizeof(c_long) == 8
The problem is that the '<>' endian specification in the struct syntax
also turns on the "standard size" mode, which makes type characters have
a platform-independent meaning, which does not match with the codes used
internally in ctypes. The struct module format syntax also does not
allow specifying native-size non-native-endian items.
This commit adds a converter function that maps the internal ctypes
codes to appropriate struct module standard-size codes in the pep3118
format strings. The tests are modified to check for this.
(cherry picked from commit
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| .. | ||
| darwin | ||
| libffi | ||
| libffi_msvc | ||
| libffi_osx | ||
| _ctypes.c | ||
| _ctypes_test.c | ||
| _ctypes_test.h | ||
| callbacks.c | ||
| callproc.c | ||
| cfield.c | ||
| ctypes.h | ||
| ctypes_dlfcn.h | ||
| libffi.diff | ||
| malloc_closure.c | ||
| stgdict.c | ||