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Diffstat (limited to 'gdb/mingw-hdep.c')
-rw-r--r--gdb/mingw-hdep.c15
1 files changed, 8 insertions, 7 deletions
diff --git a/gdb/mingw-hdep.c b/gdb/mingw-hdep.c
index bb0f50a..2b92a1c 100644
--- a/gdb/mingw-hdep.c
+++ b/gdb/mingw-hdep.c
@@ -105,8 +105,8 @@ gdb_select (int n, fd_set *readfds, fd_set *writefds, fd_set *exceptfds,
if something starts using it. */
gdb_assert (!writefds || !FD_ISSET (fd, writefds));
- if (!FD_ISSET (fd, readfds)
- && !FD_ISSET (fd, exceptfds))
+ if ((!readfds || !FD_ISSET (fd, readfds))
+ && (!exceptfds || !FD_ISSET (fd, exceptfds)))
continue;
h = (HANDLE) _get_osfhandle (fd);
@@ -124,13 +124,13 @@ gdb_select (int n, fd_set *readfds, fd_set *writefds, fd_set *exceptfds,
except = never_handle;
}
- if (FD_ISSET (fd, readfds))
+ if (readfds && FD_ISSET (fd, readfds))
{
gdb_assert (num_handles < MAXIMUM_WAIT_OBJECTS);
handles[num_handles++] = read;
}
- if (FD_ISSET (fd, exceptfds))
+ if (exceptfds && FD_ISSET (fd, exceptfds))
{
gdb_assert (num_handles < MAXIMUM_WAIT_OBJECTS);
handles[num_handles++] = except;
@@ -169,10 +169,11 @@ gdb_select (int n, fd_set *readfds, fd_set *writefds, fd_set *exceptfds,
HANDLE fd_h;
struct serial *scb;
- if (!FD_ISSET (fd, readfds) && !FD_ISSET (fd, writefds))
+ if ((!readfds || !FD_ISSET (fd, readfds))
+ && (!exceptfds || !FD_ISSET (fd, exceptfds)))
continue;
- if (FD_ISSET (fd, readfds))
+ if (readfds && FD_ISSET (fd, readfds))
{
fd_h = handles[indx++];
/* This handle might be ready, even though it wasn't the handle
@@ -183,7 +184,7 @@ gdb_select (int n, fd_set *readfds, fd_set *writefds, fd_set *exceptfds,
num_ready++;
}
- if (FD_ISSET (fd, exceptfds))
+ if (exceptfds && FD_ISSET (fd, exceptfds))
{
fd_h = handles[indx++];
/* This handle might be ready, even though it wasn't the handle