diff options
| author | Stephan Bergmann <sbergman@redhat.com> | 2013-08-14 16:08:42 +0200 |
|---|---|---|
| committer | Stephan Bergmann <sbergman@redhat.com> | 2013-08-22 07:13:59 +0200 |
| commit | 8b5dc58a3e36370c7469e341ac0400cebd7e131c (patch) | |
| tree | 5906845cd1dda7daf9dd6d51967ab2c3def2f03b /solenv | |
| parent | 76d5f993e53d4cd7cdbc16e318f36b58c17ed33b (diff) | |
Misaligned access is always undefined behavior
...as flagged by Clang -fsanitize=undefined
Change-Id: I924439b1546832ebc37b87d88279822b9b7b6c0d
Diffstat (limited to 'solenv')
| -rw-r--r-- | solenv/bin/concat-deps.c | 24 |
1 files changed, 0 insertions, 24 deletions
diff --git a/solenv/bin/concat-deps.c b/solenv/bin/concat-deps.c index b305d1a790d4..f0147c84434c 100644 --- a/solenv/bin/concat-deps.c +++ b/solenv/bin/concat-deps.c @@ -16,25 +16,21 @@ #ifdef __x86_64__ #undef CORE_BIG_ENDIAN #define CORE_LITTLE_ENDIAN -#define USE_MEMORY_ALIGNMENT 64 /* big value -> no alignment */ #else #define CORE_BIG_ENDIAN #undef CORE_LITTLE_ENDIAN -#define USE_MEMORY_ALIGNMENT 4 #endif #endif #ifdef _AIX #define CORE_BIG_ENDIAN #undef CORE_LITTLE_ENDIAN -#define USE_MEMORY_ALIGNMENT 4 #endif /* Def _AIX */ #ifdef _MSC_VER #define __windows #undef CORE_BIG_ENDIAN #define CORE_LITTLE_ENDIAN -#define USE_MEMORY_ALIGNMENT 64 /* big value -> no alignment */ #endif /* Def _MSC_VER */ #if defined(__linux) || defined(__OpenBSD__) || \ @@ -44,16 +40,10 @@ #if __BYTE_ORDER == __LITTLE_ENDIAN #undef CORE_BIG_ENDIAN #define CORE_LITTLE_ENDIAN -#if defined(__x86_64) || defined(__i386) -#define USE_MEMORY_ALIGNMENT 64 -#else -#define USE_MEMORY_ALIGNMENT 4 -#endif #else /* !(__BYTE_ORDER == __LITTLE_ENDIAN) */ #if __BYTE_ORDER == __BIG_ENDIAN #define CORE_BIG_ENDIAN #undef CORE_LITTLE_ENDIAN -#define USE_MEMORY_ALIGNMENT 4 #endif /* __BYTE_ORDER == __BIG_ENDIAN */ #endif /* !(__BYTE_ORDER == __LITTLE_ENDIAN) */ #endif /* Def __linux || Def *BSD */ @@ -62,22 +52,12 @@ #ifdef __sparc #define CORE_BIG_ENDIAN #undef CORE_LITTLE_ENDIAN -#define USE_MEMORY_ALIGNMENT 4 #else /* Ndef __sparc */ #undef CORE_BIG_ENDIAN #define CORE_LITTLE_ENDIAN -#define USE_MEMORY_ALIGNMENT 4 #endif /* Ndef __sparc */ #endif /* Def __sun */ -/* Note USE_MEMORY_ALIGNMENT is 4 for platform that allow short non-aligned but required int access to be aligned (e.g sparc, ppc, zos..) - * USE_MEMORY_ALIGNMENT is 2 for platform that require short and int access to be aligned (e.g hppa ) - * if the platform does not have alignment requirement (x86/amd64) use a big value (i.e > 16) - */ -#ifndef USE_MEMORY_ALIGNMENT -#error "USE_MEMORY_ALIGNMENT must be defined to the proper alignment value for the platform" -#endif - #include <assert.h> #include <stdio.h> #include <stdlib.h> @@ -136,9 +116,6 @@ int result = 32; } #endif -#if (USE_MEMORY_ALIGNMENT > 4) -#define get_unaligned_uint(str) (*(unsigned int*)(str)) -#else static inline unsigned int get_unaligned_uint(const unsigned char* cursor) { unsigned int result; @@ -146,7 +123,6 @@ unsigned int result; memcpy(&result, cursor, sizeof(unsigned int)); return result; } -#endif /* =============================================== * memory pool for fast fix-size allocation (non-tread-safe) |