diff options
Diffstat (limited to 'user')
-rw-r--r-- | user/usertests.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/user/usertests.c b/user/usertests.c index f83a060..aefbc9f 100644 --- a/user/usertests.c +++ b/user/usertests.c @@ -2251,9 +2251,12 @@ countfree() int n = 0; while(1){ - if((uint64)sbrk(4096) == 0xffffffffffffffff){ + uint64 a = (uint64) sbrk(4096); + if(a == 0xffffffffffffffff){ break; } + // modify the memory to make sure it's really allocated. + *(char *)(a - 1) = 1; n += 1; } sbrk(-((uint64)sbrk(0) - sz0)); |