New submission from Brett Cannon:
Discovered on OS X 10.8 with clang 3.1, I'm having build failures for _json,
_md5, _sha1, _sha256, _sha3, and _sha512 because _PyUnicode_CheckConsistency()
is only defined when defined(Py_DEBUG) && !defined(Py_LIMITED_API) even though
it is only used in assert() calls (like the one below). If you read the comment
in Include/Python.h where assert.h is included it explicitly says that:
/* CAUTION: Build setups should ensure that NDEBUG is defined on the
* compiler command line when building Python in release mode; else
* assert() calls won't be removed.
*/
Based on the output below that is not currently happening in setup.py. Not sure
if that is a failure of setup.py or distutils of not specifying the flag.
building '_json' extension
/Users/bcannon/Developer/bin/clang -Wno-unused-result -g -O0 -Wall
-Wstrict-prototypes -Wno-unused-value -Wno-empty-body -Qunused-arguments
-Wno-unused-value -Wno-empty-body -Qunused-arguments -I./Include -I.
-I/Users/bcannon/Developer/include
-I/Users/bcannon/Developer/Cellar/readline/6.2.2/include
-I/Users/bcannon/Developer/repo/cpython/py3.3/Include
-I/Users/bcannon/Developer/repo/cpython/py3.3 -c
/Users/bcannon/Developer/repo/cpython/py3.3/Modules/_json.c -o
build/temp.macosx-10.8-x86_64-3.3/Users/bcannon/Developer/repo/cpython/py3.3/Modules/_json.o
/Users/bcannon/Developer/repo/cpython/py3.3/Modules/_json.c:249:12: warning:
implicit declaration of function
'_PyUnicode_CheckConsistency' is invalid in C99
[-Wimplicit-function-declaration]
assert(_PyUnicode_CheckConsistency(rval, 1));
^
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
(__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e)
: (void)0)
^
1 warning generated.
/Users/bcannon/Developer/bin/clang -bundle -undefined dynamic_lookup -L
/Users/bcannon/Developer/lib
-L/Users/bcannon/Developer/Cellar/readline/6.2.2/lib -L
/Users/bcannon/Developer/lib
-L/Users/bcannon/Developer/Cellar/readline/6.2.2/lib -L
/Users/bcannon/Developer/lib
-L/Users/bcannon/Developer/Cellar/readline/6.2.2/lib -Wno-unused-value
-Wno-empty-body -Qunused-arguments -I /Users/bcannon/Developer/include
-I/Users/bcannon/Developer/Cellar/readline/6.2.2/include
build/temp.macosx-10.8-x86_64-3.3/Users/bcannon/Developer/repo/cpython/py3.3/Modules/_json.o
-L/Users/bcannon/Developer/lib
-L/Users/bcannon/Developer/Cellar/readline/6.2.2/lib -o
build/lib.macosx-10.8-x86_64-3.3/_json.so
*** WARNING: renaming "_json" since importing it failed:
dlopen(build/lib.macosx-10.8-x86_64-3.3/_json.so, 2): Symbol not found:
__PyUnicode_CheckConsistency
Referenced from: build/lib.macosx-10.8-x86_64-3.3/_json.so
Expected in: flat namespace
in build/lib.macosx-10.8-x86_64-3.3/_json.so
----------
components: Build
keywords: 3.3regression
messages: 173992
nosy: brett.cannon, eric.araujo
priority: normal
severity: normal
stage: needs patch
status: open
title: setup.py not compiling with NDEBUG in non-debug builds
type: compile error
versions: Python 3.3, Python 3.4
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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue16342>
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