7fd19291a5
On AIX: * mmap does not allow to map an already mapped range, * mmap range start at 0x30000000 for 32 bits processes, * mmap range start at 0x70000000_00000000 for 64 bits processes This is adapted from change 37845. Issue golang/go#19200 Reviewed-on: https://go-review.googlesource.com/46772 From-SVN: r249713