Ensure memory accesses in the sha3 module are aligned on ARM as it causes
problems when running 32-bit code on a 64-bit kernel.

Patch taken from upstream bug report:
https://bugs.python.org/issue36515

--- a/Modules/_sha3/sha3module.c
+++ b/Modules/_sha3/sha3module.c
@@ -64,6 +64,12 @@
 #define PLATFORM_BYTE_ORDER IS_BIG_ENDIAN
 #endif
 
+/* Bus error on 32-bit ARM due to un-aligned memory accesses; 64-bit ARM
+ * doesn't complain but un-aligned memory accesses are sub-optimal */
+#if defined(__arm__) || defined(__aarch64__)
+#define NO_MISALIGNED_ACCESSES
+#endif
+
 /* mangle names */
 #define KeccakF1600_FastLoop_Absorb _PySHA3_KeccakF1600_FastLoop_Absorb
 #define Keccak_HashFinal _PySHA3_Keccak_HashFinal
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<tr><td><span title='2020-03-14 13:13:40 +0100'>2020-03-14</span></td><td><a href='/guix/commit/gnu/packages/fltk.scm?id=961d2ee2695b38503b463d055e9c7edbcc0bf307'>Merge branch 'master' into core-updates</a></td><td>Marius Bakke</td></tr>
<tr><td><span title='2020-03-13 05:39:33 +0100'>2020-03-13</span></td><td><a href='/guix/commit/gnu/packages/fltk.scm?id=d1548cb09f9294d0c68e2eb54f2f27a594b84fe2'>gnu: fltk: Use HTTPS home page.</a><span class='msg-avail'>...</span></td><td>Tobias Geerinckx-Rice</td></tr>