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external/python3: Work around -fsanitize=alignment

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Change-Id: I33976bc96fc78dd0210d9aec6d1ec925f514c7f2
This commit is contained in:
Stephan Bergmann
2015-01-13 16:12:55 +01:00
parent 7ca657e5ee
commit e376bc04dc
1 changed files with 22 additions and 0 deletions
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22
external/python3/ubsan.patch.0 vendored
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@ -1,3 +1,25 @@
--- Modules/_ctypes/libffi/src/x86/ffi64.c
+++ Modules/_ctypes/libffi/src/x86/ffi64.c
@@ -545,11 +545,15 @@
tramp = (volatile unsigned short *) &closure->tramp[0];
tramp[0] = 0xbb49; /* mov <code>, %r11 */
- *((unsigned long long * volatile) &tramp[1])
- = (unsigned long) ffi_closure_unix64;
+ tramp[1] = (unsigned long) ffi_closure_unix64;
+ tramp[2] = ((unsigned long) ffi_closure_unix64) >> 16;
+ tramp[3] = ((unsigned long) ffi_closure_unix64) >> 32;
+ tramp[4] = ((unsigned long) ffi_closure_unix64) >> 48;
tramp[5] = 0xba49; /* mov <data>, %r10 */
- *((unsigned long long * volatile) &tramp[6])
- = (unsigned long) codeloc;
+ tramp[6] = (unsigned long) codeloc;
+ tramp[7] = ((unsigned long) codeloc) >> 16;
+ tramp[8] = ((unsigned long) codeloc) >> 32;
+ tramp[9] = ((unsigned long) codeloc) >> 48;
/* Set the carry bit iff the function uses any sse registers.
This is clc or stc, together with the first byte of the jmp. */
--- Objects/listobject.c
+++ Objects/listobject.c
@@ -2036,7 +2036,7 @@