Disable DebPrint in sys_read on MS-Windows

* src/w32.c (sys_read): Disable a debugging print that is normal
when non-blocking reads are retried.

1 files changed, 11 insertions, 1 deletions

diff --git a/src/w32.c b/src/w32.c
index 067bb3d7cad..fbcfb970337 100644
--- a/src/w32.c
+++ b/src/w32.c
@@ -8369,7 +8369,17 @@ sys_read (int fd, char * buffer, unsigned int count)
 
             case STATUS_READ_READY:
             case STATUS_READ_IN_PROGRESS:
-              DebPrint (("sys_read called when read is in progress\n"));
+#if 0
+              /* This happens all the time during GnuTLS handshake
+                 with the remote, evidently because GnuTLS waits for
+                 the read to complete by retrying the read operation
+                 upon EAGAIN.  So I'm disabling the DebPrint to avoid
+                 wasting cycles on something that is not a real
+                 problem.  Enable if you need to debug something that
+                 bumps into this.  */
+              DebPrint (("sys_read called when read is in progress %d\n",
+                         current_status));
+#endif
               errno = EWOULDBLOCK;
               return -1;