X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=src%2Flinux%2Fsbrk.c;h=36437653bb9085b02908f402403e59cee7bd637c;hb=0636d5977aa796d78869ee310c6e69220b919eee;hp=b2943a9239533967b1f8468dc607804b31335b0d;hpb=aa398f56fa398f2202b04e82c67f822f3233786f;p=musl

diff --git a/src/linux/sbrk.c b/src/linux/sbrk.c
index b2943a92..36437653 100644
--- a/src/linux/sbrk.c
+++ b/src/linux/sbrk.c
@@ -1,7 +1,9 @@
-#include <stddef.h>
+#include <stdint.h>
 #include "syscall.h"
 
-void *sbrk(ptrdiff_t inc)
+void *sbrk(intptr_t inc)
 {
-	return (void *)syscall(SYS_brk, syscall(SYS_brk, 0)+inc);
+	unsigned long cur = syscall(SYS_brk, 0);
+	if (inc && syscall(SYS_brk, cur+inc) != cur+inc) return (void *)-1;
+	return (void *)cur;
 }