bpo-34537: Fix test_gdb:test_strings with LC_ALL=C (GH-9483)
We cannot simply call locale.getpreferredencoding() here,
as GDB might have been linked against a different version
of Python with a different encoding and coercion policy
with respect to PEP 538 and PEP 540.
Thanks to Victor Stinner for a hint on how to fix this.
diff --git a/Lib/test/test_gdb.py b/Lib/test/test_gdb.py
index c2ca57a..93a2c7d 100644
--- a/Lib/test/test_gdb.py
+++ b/Lib/test/test_gdb.py
@@ -321,7 +321,20 @@
def test_strings(self):
'Verify the pretty-printing of unicode strings'
- encoding = locale.getpreferredencoding()
+ # We cannot simply call locale.getpreferredencoding() here,
+ # as GDB might have been linked against a different version
+ # of Python with a different encoding and coercion policy
+ # with respect to PEP 538 and PEP 540.
+ out, err = run_gdb(
+ '--eval-command',
+ 'python import locale; print(locale.getpreferredencoding())')
+
+ encoding = out.rstrip()
+ if err or not encoding:
+ raise RuntimeError(
+ f'unable to determine the preferred encoding '
+ f'of embedded Python in GDB: {err}')
+
def check_repr(text):
try:
text.encode(encoding)