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| author | Peter Maydell | 2017-07-14 12:45:17 +0200 |
|---|---|---|
| committer | Peter Maydell | 2017-07-20 16:00:00 +0200 |
| commit | 64f871e3c92ecd3c72a37b48bcf12812f0057734 (patch) | |
| tree | 000faed7ffc059ce25662c85d5fb194f42fff049 /tests | |
| parent | configure: Don't build ivshmem tools unless CONFIG_IVSHMEM is set (diff) | |
| download | qemu-64f871e3c92ecd3c72a37b48bcf12812f0057734.tar.gz qemu-64f871e3c92ecd3c72a37b48bcf12812f0057734.tar.xz qemu-64f871e3c92ecd3c72a37b48bcf12812f0057734.zip | |
tests: Handle $RANDOM not being supported by the shell
In various places in our test makefiles and scripts we use the
shell $RANDOM to create a random number. This is a bash
specific extension, and doesn't work on other shells.
With dash the shell doesn't complain, it just effectively
always evaluates $RANDOM to 0:
echo $((RANDOM + 32768)) => 32768
However, on NetBSD the shell will complain:
"-sh: arith: syntax error: "RANDOM + 32768"
which means that "make check" fails.
Switch to using "${RANDOM:-0}" instead of $RANDOM,
which will portably either give us a random number or zero.
This means that on non-bash shells we don't get such
good test coverage via the MALLOC_PERTURB_ setting, but
we were already in that situation for non-bash shells.
Our only other uses of $RANDOM (in tests/qemu-iotests/check
and tests/qemu-iotests/162) are in shell scripts which use
a #!/bin/bash line so they are always run under bash.
Suggested-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Kamil Rytarowski <n54@gmx.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 1500029117-6387-1-git-send-email-peter.maydell@linaro.org
Diffstat (limited to 'tests')
| -rw-r--r-- | tests/Makefile.include | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/tests/Makefile.include b/tests/Makefile.include index 9f679c2f8e..7af278db55 100644 --- a/tests/Makefile.include +++ b/tests/Makefile.include @@ -834,7 +834,7 @@ $(patsubst %, check-qtest-%, $(QTEST_TARGETS)): check-qtest-%: $(check-qtest-y) $(if $(CONFIG_GCOV),@rm -f *.gcda */*.gcda */*/*.gcda */*/*/*.gcda,) $(call quiet-command,QTEST_QEMU_BINARY=$*-softmmu/qemu-system-$* \ QTEST_QEMU_IMG=qemu-img$(EXESUF) \ - MALLOC_PERTURB_=$${MALLOC_PERTURB_:-$$((RANDOM % 255 + 1))} \ + MALLOC_PERTURB_=$${MALLOC_PERTURB_:-$$(( $${RANDOM:-0} % 255 + 1))} \ gtester $(GTESTER_OPTIONS) -m=$(SPEED) $(check-qtest-$*-y) $(check-qtest-generic-y),"GTESTER","$@") $(if $(CONFIG_GCOV),@for f in $(gcov-files-$*-y) $(gcov-files-generic-y); do \ echo Gcov report for $$f:;\ @@ -845,7 +845,7 @@ $(patsubst %, check-qtest-%, $(QTEST_TARGETS)): check-qtest-%: $(check-qtest-y) $(patsubst %, check-%, $(check-unit-y) $(check-speed-y)): check-%: % $(if $(CONFIG_GCOV),@rm -f *.gcda */*.gcda */*/*.gcda */*/*/*.gcda,) $(call quiet-command, \ - MALLOC_PERTURB_=$${MALLOC_PERTURB_:-$$((RANDOM % 255 + 1))} \ + MALLOC_PERTURB_=$${MALLOC_PERTURB_:-$$(( $${RANDOM:-0} % 255 + 1))} \ gtester $(GTESTER_OPTIONS) -m=$(SPEED) $*,"GTESTER","$*") $(if $(CONFIG_GCOV),@for f in $(gcov-files-$(subst tests/,,$*)-y) $(gcov-files-generic-y); do \ echo Gcov report for $$f:;\ |