* cpplib.c (do_define): Only free the old definition if it

	actually had one.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@31964 138bc75d-0d04-0410-961f-82ee72b054a4

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 21b8fc4..0f0b435 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2000-02-13  Zack Weinberg  <zack@wolery.cumb.org>
+
+       * cpplib.c (do_define): Only free the old definition if it
+       actually had one.
+
 2000-02-13   Neil Booth  <NeilB@earthling.net>
 
        * cppfiles.c (read_and_prescan): When emitting deferred

diff --git a/gcc/cpplib.c b/gcc/cpplib.c
index 9238d33..844b89f 100644 (file)
--- a/gcc/cpplib.c
+++ b/gcc/cpplib.c
@@ -715,8 +715,9 @@ do_define (pfile, keyword)
       if (hp->type != T_POISON)
        {
          /* Replace the old definition.  */
+         if (hp->type == T_MACRO)
+           free_definition (hp->value.defn);
          hp->type = T_MACRO;
-         free_definition (hp->value.defn);
          hp->value.defn = mdef.defn;
        }
     }