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authorPaul Eggert <eggert@cs.ucla.edu>2012-06-04 10:17:48 -0700
committerPaul Eggert <eggert@cs.ucla.edu>2012-06-04 10:17:48 -0700
commita043d3535a567070c005495cd2a6290208647f50 (patch)
tree0421ca109ac0a83948e09c3d30eec9e1aae74218 /etc/PROBLEMS
parente364a2b7e15b4d8e4b36361138781d49720b6c95 (diff)
downloademacs-a043d3535a567070c005495cd2a6290208647f50.tar.gz
* PROBLEMS (68000 C compiler problems): Remove obsolete section.
Not only are the compilers long-dead, the obsolete advice typically doesn't apply to current Emacs sources.
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diff --git a/etc/PROBLEMS b/etc/PROBLEMS
index 6d5ee0498c7..078352d78f4 100644
--- a/etc/PROBLEMS
+++ b/etc/PROBLEMS
@@ -3205,50 +3205,6 @@ causes the problem to go away.
The `contents' field of a Lisp vector is an array of Lisp_Objects,
so you may see the problem happening with indexed references to that.
-** 68000 C compiler problems
-
-Various 68000 compilers have different problems.
-These are some that have been observed.
-
-*** Using value of assignment expression on union type loses.
-This means that x = y = z; or foo (x = z); does not work
-if x is of type Lisp_Object.
-
-*** "cannot reclaim" error.
-
-This means that an expression is too complicated. You get the correct
-line number in the error message. The code must be rewritten with
-simpler expressions.
-
-*** XCONS, XSTRING, etc macros produce incorrect code.
-
-If temacs fails to run at all, this may be the cause.
-Compile this test program and look at the assembler code:
-
-struct foo { char x; unsigned int y : 24; };
-
-lose (arg)
- struct foo arg;
-{
- test ((int *) arg.y);
-}
-
-If the code is incorrect, your compiler has this problem.
-In the XCONS, etc., macros in lisp.h you must replace (a).u.val with
-((a).u.val + coercedummy) where coercedummy is declared as int.
-
-This problem will only happen if USE_LISP_UNION_TYPE is manually
-defined in lisp.h.
-
-** C compilers lose on returning unions.
-
-I hear that some C compilers cannot handle returning a union type.
-Most of the functions in GNU Emacs return type Lisp_Object, which is
-defined as a union on some rare architectures.
-
-This problem will only happen if USE_LISP_UNION_TYPE is manually
-defined in lisp.h.
-
This file is part of GNU Emacs.