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dup2, dup3: work around another cygwin crasher
[gnulib.git]
/
tests
/
test-dup3.c
diff --git
a/tests/test-dup3.c
b/tests/test-dup3.c
index
ab2646b
..
5a4aa6d
100644
(file)
--- a/
tests/test-dup3.c
+++ b/
tests/test-dup3.c
@@
-76,6
+76,7
@@
int
main ()
{
int use_cloexec;
main ()
{
int use_cloexec;
+ int bad_fd = getdtablesize ();
#if O_CLOEXEC
for (use_cloexec = 0; use_cloexec <= 1; use_cloexec++)
#if O_CLOEXEC
for (use_cloexec = 0; use_cloexec <= 1; use_cloexec++)
@@
-123,8
+124,17
@@
main ()
errno = 0;
ASSERT (dup3 (fd, -2, o_flags) == -1);
ASSERT (errno == EBADF);
errno = 0;
ASSERT (dup3 (fd, -2, o_flags) == -1);
ASSERT (errno == EBADF);
+ if (bad_fd > 256)
+ {
+ ASSERT (dup3 (fd, 255, 0) == 255);
+ ASSERT (dup3 (fd, 256, 0) == 256);
+ ASSERT (close (255) == 0);
+ ASSERT (close (256) == 0);
+ }
+ ASSERT (dup3 (fd, bad_fd - 1, 0) == bad_fd - 1);
+ ASSERT (close (bad_fd - 1) == 0);
errno = 0;
errno = 0;
- ASSERT (dup3 (fd,
10000000
, o_flags) == -1);
+ ASSERT (dup3 (fd,
bad_fd
, o_flags) == -1);
ASSERT (errno == EBADF);
/* Using dup3 can skip fds. */
ASSERT (errno == EBADF);
/* Using dup3 can skip fds. */