In a QEMU user-mode environment (for various CPUs), the test-execute.sh
and test-spawn-pipe.sh tests fail. This happens with qemu 6.1.0, but did not
happen with qemu 4.1.0 and older versions.

The reason is that when qemu is used to execute a program, the file descriptor
3 is open, referencing /dev/urandom.

These two patches work around it.


2021-08-29  Bruno Haible  <bruno@clisp.org>

	spawn-pipe: Fix test failure when running under QEMU user-mode.
	* tests/test-spawn-pipe-child.c: Include <stdbool.h>, <string.h>,
	qemu.h.
	(main): Under QEMU user-mode, allow fd 2 or fd 3 to be open.
	* modules/spawn-pipe-tests (Files): Add qemu.h.
	(Depends-on): Add stdbool.

2021-08-29  Bruno Haible  <bruno@clisp.org>

	execute: Fix test failure when running under QEMU user-mode.
	* tests/test-execute-child.c: Include <stdbool.h>, qemu.h.
	(main): Under QEMU user-mode, allow fd 3 to be open.
	* modules/execute-tests (Files): Add qemu.h.
	(Depends-on): Add stdbool.