diff options
| -rw-r--r-- | libgo/runtime/mem.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/libgo/runtime/mem.c b/libgo/runtime/mem.c index 4267c55..4e1103e 100644 --- a/libgo/runtime/mem.c +++ b/libgo/runtime/mem.c @@ -85,6 +85,7 @@ void* runtime_SysReserve(void *v, uintptr n) { int fd = -1; + void *p; // On 64-bit, people with ulimit -v set complain if we reserve too // much address space. Instead, assume that the reservation is okay @@ -103,7 +104,11 @@ runtime_SysReserve(void *v, uintptr n) fd = dev_zero; #endif - return runtime_mmap(v, n, PROT_NONE, MAP_ANON|MAP_PRIVATE, fd, 0); + p = runtime_mmap(v, n, PROT_NONE, MAP_ANON|MAP_PRIVATE, fd, 0); + if((uintptr)p < 4096 || -(uintptr)p < 4096) { + return nil; + } + return p; } void |