Closed
Description
Bug report
Bug summary
On OpenBSD using the default compiler (clang), matplotlib currently does not build due to cast from pointer to smaller type 'char'.
Code for reproduction
export CC=clang CXX=clang++
python3 -m venv venv &&
. venv/bin/activate &&
pip install --upgrade pip &&
pip install --upgrade numpy cycler pyparsing python-dateutil pytz six kiwisolver &&
pip install --upgrade matplotlib >clang.log 2>&1Actual outcome
clang -Wno-unused-result -Wsign-compare -Wunreachable-code -DNDEBUG -O2 -pipe -fPIC -O2 -pipe -O2 -pipe -fPIC -DPY_ARRAY_UNIQUE_SYMBOL=MPL_matplotlib_ttconv_ARRAY_API -DNPY_NO_DEPRECATED_API=NPY_1_7_API_VERSION -D__STDC_FORMAT_MACROS=1 -I/home/dahlbaek/test_matplotlib/venv/lib/python3.6/site-packages/numpy/core/include -Iextern -I/usr/local/include -I/usr/include -I. -I/home/dahlbaek/test_matplotlib/venv/include -I/usr/local/include/python3.6m -c extern/ttconv/pprdrv_tt.cpp -o build/temp.openbsd-6.3-amd64-3.6/extern/ttconv/pprdrv_tt.o
extern/ttconv/pprdrv_tt.cpp:248:41: error: cast from pointer to smaller type 'char' loses information
font->Copyright[length]=(char)NULL;
^~~~~~~~~~
extern/ttconv/pprdrv_tt.cpp:264:42: error: cast from pointer to smaller type 'char' loses information
font->FamilyName[length]=(char)NULL;
^~~~~~~~~~
extern/ttconv/pprdrv_tt.cpp:280:37: error: cast from pointer to smaller type 'char' loses information
font->Style[length]=(char)NULL;
^~~~~~~~~~
extern/ttconv/pprdrv_tt.cpp:296:40: error: cast from pointer to smaller type 'char' loses information
font->FullName[length]=(char)NULL;
^~~~~~~~~~
extern/ttconv/pprdrv_tt.cpp:312:39: error: cast from pointer to smaller type 'char' loses information
font->Version[length]=(char)NULL;
^~~~~~~~~~
extern/ttconv/pprdrv_tt.cpp:328:40: error: cast from pointer to smaller type 'char' loses information
font->PostName[length]=(char)NULL;
^~~~~~~~~~
extern/ttconv/pprdrv_tt.cpp:343:42: error: cast from pointer to smaller type 'char' loses information
font->PostName[length/2]=(char)NULL;
^~~~~~~~~~
extern/ttconv/pprdrv_tt.cpp:358:41: error: cast from pointer to smaller type 'char' loses information
font->Trademark[length]=(char)NULL;
^~~~~~~~~~
extern/ttconv/pprdrv_tt.cpp:1044:19: error: cast from pointer to smaller type 'char' loses information
temp[len]=(char)NULL; /* a buffer and make it ASCIIz. */
^~~~~~~~~~
9 errors generated.
error: command 'clang' failed with exit status 1
For full output, see clang.log
Expected outcome
Expected outcome is that matplotlib builds without complication.
Matplotlib version
- Operating system: OpenBSD 6.3 amd64
- Matplotlib version: 2.2.2
- Matplotlib backend (
print(matplotlib.get_backend())): NA - Python version: 3.6.5
- Jupyter version (if applicable): NA
- Other libraries:
$ clang -v
OpenBSD clang version 6.0.0 (tags/RELEASE_600/final) (based on LLVM 6.0.0)
Target: amd64-unknown-openbsd6.3
Thread model: posix
Python3 was installed using the OpenBSD package system,
pkg_add python-3.6.5