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-rw-r--r--gdb/serial.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/gdb/serial.c b/gdb/serial.c
index 99c5a54f832..2d73226761c 100644
--- a/gdb/serial.c
+++ b/gdb/serial.c
@@ -344,6 +344,11 @@ serial_readchar (serial_t scb, int timeout)
{
int ch;
+ /* FIXME: cagney/1999-10-11: Don't enable this check until the ASYNC
+ code is finished. */
+ if (0 && SERIAL_IS_ASYNC_P (scb) && timeout < 0)
+ internal_error ("serial_readchar: blocking read in async mode");
+
ch = scb->ops->readchar (scb, timeout);
if (serial_logfp != NULL)
{