X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=src%2Flinux%2Fsbrk.c;h=36437653bb9085b02908f402403e59cee7bd637c;hb=faea4c9937d36b17e53fdc7d5a254d7e936e1755;hp=56f60d1b492540ea8145353e349b7562dfa2b90d;hpb=0b44a0315b47dd8eced9f3b7f31580cf14bbfc01;p=musl

diff --git a/src/linux/sbrk.c b/src/linux/sbrk.c
index 56f60d1b..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 *)syscall1(__NR_brk, syscall1(__NR_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;
 }