Commit 206333ee authored by Paul Eggert's avatar Paul Eggert
Browse files

* lisp.h (TAG_SYMPTR): Don't do arithmetic on NULL.

This is a followup to the "Port Qnil==0 XUNTAG to clang" patch.
Although clang doesn't need it, some other compiler might, and
it's easy enough to be safe.
parent ce5c361c
2015-01-08 Paul Eggert <eggert@cs.ucla.edu>
 
* lisp.h (TAG_SYMPTR): Don't do arithmetic on NULL.
This is a followup to the "Port Qnil==0 XUNTAG to clang" patch.
Although clang doesn't need it, some other compiler might, and
it's easy enough to be safe.
* conf_post.h (ATTRIBUTE_ALLOC_SIZE): Port to clang 3.5.0.
Apparently clang removed support for the alloc_size attribute.
 
......
......@@ -729,7 +729,8 @@ struct Lisp_Symbol
/* Yield an integer that tags PTR as a symbol. */
#define TAG_SYMPTR(ptr) \
TAG_PTR (Lisp_Symbol, (char *) (ptr) - (char *) (USE_LSB_TAG ? lispsym : 0))
TAG_PTR (Lisp_Symbol, \
USE_LSB_TAG ? (char *) (ptr) - (char *) lispsym : (intptr_t) (ptr))
/* Declare extern constants for Lisp symbols. These can be helpful
when using a debugger like GDB, on older platforms where the debug
......
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