Hi,

even with this "read1"-fix patch it is not fully reliable.
But this time I do not have a reliable reproducer, it just FAILs during fully
parallel Fedora GDB build; but running the Fedora GDB test by hand PASSes.

+FAIL: gdb.base/paginate-bg-execution.exp: cancel with ctrl-c: cancel pagination (timeout)
+FAIL: gdb.base/paginate-execution-startup.exp: cancel with ctrl-c: cancel pagination (timeout)

I have tried the attached patch but it has no effect.

continue&^M
Continuing.^M
(gdb) PASS: gdb.base/paginate-bg-execution.exp: cancel with ctrl-c: continue&
---Type <return> to continue, or q <return> to quit---PASS: gdb.base/paginate-bg-execution.exp: cancel with ctrl-c: continue& paginates
FAIL: gdb.base/paginate-bg-execution.exp: cancel with ctrl-c: cancel pagination (timeout)
^CQuit^M
(gdb) p 1^M
$1 = 1^M
(gdb) PASS: gdb.base/paginate-bg-execution.exp: cancel with ctrl-c: GDB accepts further input

Reading symbols from /unsafebuild-x86_64-redhat-linux-gnu/gdb/testsuite.unix.-m64/outputs/gdb.base/paginate-execution-startup/paginate-execution-startup...done.^M
---Type <return> to continue, or q <return> to quit---PASS: gdb.base/paginate-execution-startup.exp: cancel with ctrl-c: run to pagination
FAIL: gdb.base/paginate-execution-startup.exp: cancel with ctrl-c: cancel pagination (timeout)
^CQuit^M
(gdb) p 1^M
$1 = 1^M
(gdb) PASS: gdb.base/paginate-execution-startup.exp: cancel with ctrl-c: GDB accepts further input


Jan