external/python3/ubsan.patch.0

   1 diff -ru python3.orig/Modules/_ctypes/libffi/src/x86/ffi64.c python3/Modules/_ctypes/libffi/src/x86/ffi64.c
   2 --- Modules/_ctypes/libffi/src/x86/ffi64.c      2015-07-05 18:50:07.000000000 +0200
   3 +++ Modules/_ctypes/libffi/src/x86/ffi64.c      2015-07-26 20:18:56.457153323 +0200
   4 @@ -548,11 +548,15 @@
   5    tramp = (volatile unsigned short *) &closure->tramp[0];
   6
   7    tramp[0] = 0xbb49;           /* mov <code>, %r11     */
   8 -  *((unsigned long long * volatile) &tramp[1])
   9 -    = (unsigned long) ffi_closure_unix64;
  10 +  tramp[1] = (unsigned long) ffi_closure_unix64;
  11 +  tramp[2] = ((unsigned long) ffi_closure_unix64) >> 16;
  12 +  tramp[3] = ((unsigned long) ffi_closure_unix64) >> 32;
  13 +  tramp[4] = ((unsigned long) ffi_closure_unix64) >> 48;
  14    tramp[5] = 0xba49;           /* mov <data>, %r10     */
  15 -  *((unsigned long long * volatile) &tramp[6])
  16 -    = (unsigned long) codeloc;
  17 +  tramp[6] = (unsigned long) codeloc;
  18 +  tramp[7] = ((unsigned long) codeloc) >> 16;
  19 +  tramp[8] = ((unsigned long) codeloc) >> 32;
  20 +  tramp[9] = ((unsigned long) codeloc) >> 48;
  21
  22    /* Set the carry bit iff the function uses any sse registers.
  23       This is clc or stc, together with the first byte of the jmp.  */