Panic in sbrk if setheap hasn't been called yet. This is preferable to

a mysterious crash. Sponsored by: Netflix
svn path=/head/; revision=326886
2017-12-15 23:16:47 +00:00 · 2017-12-15 23:16:47 +00:00 · 9a7c084993 · 2020-12-20 02:59:44 +00:00
commit 9a7c084993
parent 328884aef7
1 changed files with 3 additions and 0 deletions
--- a/stand/libsa/sbrk.c
+++ b/stand/libsa/sbrk.c
@ -52,6 +52,9 @@ sbrk(int incr)
 {
    char	*ret;
    
+    if (heapbase == 0)
+	    panic("No heap setup\n");
+
    if ((heapsize + incr) <= maxheap) {
 	ret = (char *)heapbase + heapsize;
 	bzero(ret, incr);