diff options
| -rw-r--r-- | src/lisp.h | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/src/lisp.h b/src/lisp.h index dcc157e0b96..96256386218 100644 --- a/src/lisp.h +++ b/src/lisp.h @@ -276,15 +276,17 @@ error !; /* Minimum alignment requirement for Lisp objects, imposed by the internal representation of tagged pointers. It is 2**GCTYPEBITS if - USE_LSB_TAG, 1 otherwise. It must be a literal integer constant, - for older versions of GCC (through at least 4.9). */ + USE_LSB_TAG, otherwise the alignment of Lisp_Object to avoid + padding after union vectorlike_header. It must be a literal + integer constant, for older versions of GCC (through at least + 4.9). */ #if USE_LSB_TAG # define GCALIGNMENT 8 # if GCALIGNMENT != 1 << GCTYPEBITS # error "GCALIGNMENT and GCTYPEBITS are inconsistent" # endif #else -# define GCALIGNMENT 1 +# define GCALIGNMENT alignof (Lisp_Object) #endif #define GCALIGNED_UNION char alignas (GCALIGNMENT) gcaligned; |