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bbc7fda9 · Alan Lehotsky · Alan Lehotsky · a4299d07 · bbc7fda9 · bbc7fda9
Commit bbc7fda9 authored Jan 11, 2001 by Alan Lehotsky Committed by Alan Lehotsky Jan 11, 2001
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gcc/ChangeLog
+5 -0

gcc/builtins.c
+6 -1

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--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
+2001-01-11  Alan Lehotsky  <lehotsky@tiac.net>
+
+	* builtins.c (std_expand_builtin_va_start): Handle varargs when
+	sizeof (int) is larger than sizeof(__word__).
+	
 2001-01-11  Neil Booth  <neil@daikokuya.demon.co.uk>

        * cppinit.c (do_includes): Fix typo.

--- a/gcc/builtins.c
+++ b/gcc/builtins.c
@@ -2801,8 +2801,13 @@ std_expand_builtin_va_start (stdarg_p, valist, nextarg)

  if (! stdarg_p)
    {
+      /* The dummy named parameter is declared as a 'word' sized
+	 object, but if a 'word' is smaller than an 'int', it would
+	 have been promoted to int when it was added to the arglist.  */
      int align = PARM_BOUNDARY / BITS_PER_UNIT;
-      int offset = (((UNITS_PER_WORD + align - 1) / align) * align);
+      int size = MAX (UNITS_PER_WORD,
+		      GET_MODE_SIZE (TYPE_MODE (integer_type_node)));
+      int offset = ((size + align - 1) / align) * align;
      nextarg = plus_constant (nextarg, -offset);
    }