diff options
| -rw-r--r-- | src/nvim/eval/funcs.c | 5 | ||||
| -rw-r--r-- | src/nvim/testdir/test_random.vim | 19 |
2 files changed, 22 insertions, 2 deletions
diff --git a/src/nvim/eval/funcs.c b/src/nvim/eval/funcs.c index ec62c583a6..017e8e502c 100644 --- a/src/nvim/eval/funcs.c +++ b/src/nvim/eval/funcs.c @@ -5145,10 +5145,11 @@ static void init_srand(uint32_t *const x) } } if (dev_urandom_state != OK) { - // Reading /dev/urandom doesn't work, fall back to time(). + // Reading /dev/urandom doesn't work, fall back to os_hrtime() XOR with process ID #endif // uncrustify:off - *x = (uint32_t)time(NULL); + *x = (uint32_t)os_hrtime(); + *x ^= (uint32_t)os_get_pid(); #ifndef MSWIN } #endif diff --git a/src/nvim/testdir/test_random.vim b/src/nvim/testdir/test_random.vim index fb1c9ab6cd..d91815703c 100644 --- a/src/nvim/testdir/test_random.vim +++ b/src/nvim/testdir/test_random.vim @@ -1,5 +1,8 @@ " Tests for srand() and rand() +source check.vim +source shared.vim + func Test_Rand() let r = srand(123456789) call assert_equal([1573771921, 319883699, 2742014374, 1324369493], r) @@ -48,4 +51,20 @@ func Test_issue_5587() call rand() endfunc +func Test_srand() + CheckNotGui + + let cmd = GetVimCommand() .. ' -V -es -c "echo rand()" -c qa!' + let bad = 0 + for _ in range(10) + echo cmd + let result1 = system(cmd) + let result2 = system(cmd) + if result1 ==# result2 + let bad += 1 + endif + endfor + call assert_inrange(0, 4, bad) +endfunc + " vim: shiftwidth=2 sts=2 expandtab |