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-rw-r--r--gcc/ChangeLog5
-rw-r--r--gcc/cpplib.c3
2 files changed, 7 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 21b8fc4..0f0b435 100644
--- 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
--- 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;
}
}