BUILD: fix missing include for std::ptrdiff_t for C++23 language mode#27416
Merged
charris merged 1 commit intonumpy:maintenance/2.1.xfrom Sep 18, 2024
Merged
BUILD: fix missing include for std::ptrdiff_t for C++23 language mode#27416charris merged 1 commit intonumpy:maintenance/2.1.xfrom
charris merged 1 commit intonumpy:maintenance/2.1.xfrom
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Are there any plans backporting this fix to the FAILED: numpy/_core/_multiarray_umath.pypy39-pp73-darwin.so.p/src_umath_string_ufuncs.cpp.o
c++ -Inumpy/_core/_multiarray_umath.pypy39-pp73-darwin.so.p -Inumpy/_core -I../numpy/_core -Inumpy/_core/include -I../numpy/_core/include -I../numpy/_core/src/common -I../numpy/_core/src/multiarray -I../numpy/_core/src/npymath -I../numpy/_core/src/umath -I../numpy/_core/src/highway -I/Users/runner/work/hogpp/hogpp/.cibuildwheel/pypy3.9-v7.3.16-macos_arm64/include/pypy3.9 -I/private/var/folders/_d/l5rp6h1s2bnfkdsrc1wc54t00000gn/T/pip-install-luog790t/numpy_f604cee84c334f3ebc194bdadda2dee7/.mesonpy-u82k8a4a/meson_cpu -fvisibility=hidden -fvisibility-inlines-hidden -fdiagnostics-color=always -DNDEBUG -Wall -Winvalid-pch -std=c++17 -O3 -ftrapping-math -DNPY_HAVE_CLANG_FPSTRICT -DNPY_HAVE_NEON_VFPV4 -DNPY_HAVE_NEON_FP16 -DNPY_HAVE_NEON -DNPY_HAVE_ASIMD -flto=auto -DPYBIND11_DETAILED_ERROR_MESSAGES -F/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Accelerate.framework -idirafter/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Accelerate.framework/Headers -DACCELERATE_NEW_LAPACK -DHAVE_CBLAS '-DBLAS_SYMBOL_SUFFIX=$NEWLAPACK' -DNPY_INTERNAL_BUILD -DHAVE_NPY_CONFIG_H -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE=1 -D_LARGEFILE64_SOURCE=1 -D__STDC_VERSION__=0 -fno-exceptions -fno-rtti -MD -MQ numpy/_core/_multiarray_umath.pypy39-pp73-darwin.so.p/src_umath_string_ufuncs.cpp.o -MF numpy/_core/_multiarray_umath.pypy39-pp73-darwin.so.p/src_umath_string_ufuncs.cpp.o.d -o numpy/_core/_multiarray_umath.pypy39-pp73-darwin.so.p/src_umath_string_ufuncs.cpp.o -c ../numpy/_core/src/umath/string_ufuncs.cpp
In file included from ../numpy/_core/src/umath/string_ufuncs.cpp:20:
../numpy/_core/src/umath/string_fastsearch.h:132:5: error: no type named 'ptrdiff_t' in namespace 'std'; did you mean simply 'ptrdiff_t'?
132 | std::ptrdiff_t
| ^~~~~~~~~~~~~~
| ptrdiff_t
/Applications/Xcode_16.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/clang/16/include/__stddef_ptrdiff_t.h:18:26: note: 'ptrdiff_t' declared here
18 | typedef __PTRDIFF_TYPE__ ptrdiff_t;
| ^The failure is not C++23 specific and arises when compiling using the C++17 language standard. |
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No, we are currently maintaining 2.2.x and 2.3.x will be out in June. |
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Backport of #27361.
This tiny PR fixes a failure happening when building numpy in C++23 language mode.
This issue is caused by the ongoing cleanup of C++ standard library from transitive includes, if they aren't explicitely allowed by the standard.
In particular, in string_fastsearch.h we rely on
std::ptrdiff_tbut don't explicitely include its header,cstddef, as prescribed bt the standard.Before C++23, this worked fine as some other headers we included transitvely included
cstddef.Without this fix, both on Clang/LLVM and GCC upstreams the following error is observed:
../numpy/_core/src/umath/string_fastsearch.h:132:5: error: no type named 'ptrdiff_t' in namespace 'std'; did you mean simply 'ptrdiff_t'?Please, find the attached logs with full details.
log.txt