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gh-102204: Fix endianness issue in AIX by ayappanec · Pull Request #102206 · python/cpython · GitHub

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gh-102204: Fix endianness issue in AIX #102206

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gh-102204: Fix endianness issue in AIX #102206

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d5b132a
pythongh-102204: Fix endianness issue in AIX
ayappanec Feb 24, 2023
d73e44f
Add NEWS entry
ayappanec Feb 24, 2023
43871c1
Merge branch 'main' into gh-102204
ayappanec Feb 27, 2023
388d77b
Merge branch 'main' into gh-102204
ayappanec Mar 7, 2023
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3 changes: 3 additions & 0 deletions Misc/NEWS.d/next/Library/2023-02-24-03-54-39.gh-issue-102204.EV1GPP.rst
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Original file line number Diff line number Diff line change
@@ -0,0 +1,3 @@
AIX doesn't have ``__BYTE_ORDER__`` defined when XLC compiler is used which
breaks ``_hacl`` module build. So define _AIX in the generic big-endian
fallback code.
5 changes: 3 additions & 2 deletions Modules/_hacl/include/krml/lowstar_endianness.h
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Original file line number Diff line number Diff line change
Expand Up @@ -95,8 +95,9 @@
# define be64toh(x) __builtin_bswap64(x)
# define le64toh(x) (x)

/* ... generic big-endian fallback code */
#elif defined(__BYTE_ORDER__) && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
/* ... generic big-endian fallback code
... AIX doesn't have __BYTE_ORDER__ (with XLC compiler) & is always big-endian */
#elif (defined(__BYTE_ORDER__) && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) || defined(_AIX)

/* byte swapping code inspired by:
* https://github.com/rweather/arduinolibs/blob/master/libraries/Crypto/utility/EndianUtil.h
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