From 489f68072f95b68722b73cc53ceb5b839d997e42 Mon Sep 17 00:00:00 2001
From: Tom Ryder <tom@sanctum.geek.nz>
Date: Tue, 29 Mar 2016 00:23:49 +1300
Subject: Copy the arg strings rather than sharing them

Avoiding strdup(3) as I'm still playing the C90-only game
---
 btree-str.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/btree-str.c b/btree-str.c
index 1e0903a..ff2338e 100644
--- a/btree-str.c
+++ b/btree-str.c
@@ -42,6 +42,7 @@ void fn(Node *n) {
         fn(n->l);
     if (n->r)
         fn(n->r);
+    free(n->v);
     free(n);
     return;
 }
@@ -50,8 +51,13 @@ int main(int argc, char **argv) {
     Node *r = NULL;
 
     for (argv++, argc--; argc; argv++, argc--) {
+        unsigned long l = 0;
         Node *n = malloc(sizeof(Node));
-        n->v = *argv;
+
+        l = strlen(*argv) + 1;
+        n->v = malloc(l);
+        strncpy(n->v, *argv, l);
+
         n->l = n->r = NULL;
         an(&r, n);
     }
-- 
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