[Qemu-devel] [PATCH] tests: Force Python I/O encoding for check-qapi-schema

[Eduardo Habkost]

test-qapi.py doesn't force a specific encoding for stderr or
stdout, but the reference files used by check-qapi-schema are in
UTF-8.  This breaks check-qapi-schema under certain circumstances
(e.g. if using the C locale and Python < 3.7).

We need to make sure test-qapi.py always generate UTF-8 output
somehow.  On Python 3.7+ we can do it using
`sys.stdout.reconfigure(...)`, but we need a solution that works
with older Python versions.

Instead of trying a hack like reopening sys.stdout and
sys.stderr, we can just tell Python to use UTF-8 for I/O encoding
when running test-qapi.py.  Do it by setting PYTHONIOENCODING.

Reported-by: Thomas Huth <address@hidden>
Tested-by: Thomas Huth <address@hidden>
Signed-off-by: Eduardo Habkost <address@hidden>
---
 tests/Makefile.include | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tests/Makefile.include b/tests/Makefile.include
index 7c8b9c84b2..af88ab6f8b 100644
--- a/tests/Makefile.include
+++ b/tests/Makefile.include
@@ -1103,7 +1103,7 @@ check-tests/qemu-iotests-quick.sh: 
tests/qemu-iotests-quick.sh qemu-img$(EXESUF)
 .PHONY: $(patsubst %, check-%, $(check-qapi-schema-y))
 $(patsubst %, check-%, $(check-qapi-schema-y)): check-%.json: 
$(SRC_PATH)/%.json
        $(call quiet-command, PYTHONPATH=$(SRC_PATH)/scripts \
-               $(PYTHON) $(SRC_PATH)/tests/qapi-schema/test-qapi.py \
+               PYTHONIOENCODING=utf-8 $(PYTHON) 
$(SRC_PATH)/tests/qapi-schema/test-qapi.py \
                $^ >$*.test.out 2>$*.test.err; \
                echo $$? >$*.test.exit, \
                "TEST","$*.out")
-- 
2.18.0.rc1.1.g3f1ff2140