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Title: [3.6] bpo-10746: Fix ctypes PEP 3118 type codes for c_long, c_bool, c_int (GH-31) by pv · Pull Request #3241 · python/cpython · GitHub

Open Graph Title: [3.6] bpo-10746: Fix ctypes PEP 3118 type codes for c_long, c_bool, c_int (GH-31) by pv · Pull Request #3241 · python/cpython

X Title: [3.6] bpo-10746: Fix ctypes PEP 3118 type codes for c_long, c_bool, c_int (GH-31) by pv · Pull Request #3241 · python/cpython

Description: Ctypes currently produces wrong pep3118 type codes for several types. E.g. memoryview(ctypes.c_long()).format gives "' 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 07f1658) https://bugs.python.org/issue10746

Open Graph Description: 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...

X Description: Ctypes currently produces wrong pep3118 type codes for several types. E.g. memoryview(ctypes.c_long()).format gives &quot;&lt;l&quot; on 64-bit platforms, but it should be &quot;&am...

Opengraph URL: https://github.com/python/cpython/pull/3241

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