diff options
Diffstat (limited to 'numpy/core/src')
| -rw-r--r-- | numpy/core/src/multiarray/convert.c | 19 |
1 files changed, 13 insertions, 6 deletions
diff --git a/numpy/core/src/multiarray/convert.c b/numpy/core/src/multiarray/convert.c index d1f6e66af..aef78ff5e 100644 --- a/numpy/core/src/multiarray/convert.c +++ b/numpy/core/src/multiarray/convert.c @@ -157,11 +157,18 @@ PyArray_ToFile(PyArrayObject *self, FILE *fp, char *sep, char *format) size = PyArray_SIZE(self); NPY_BEGIN_ALLOW_THREADS; -#if defined (_MSC_VER) && defined(_WIN64) - /* Workaround Win64 fwrite() bug. Issue gh-2556 +#if defined(NPY_OS_WIN64) + /* + * Workaround Win64 fwrite() bug. Issue gh-2256 + * The native 64 windows runtime has this issue, the above will + * also trigger UCRT (which doesn't), so it could be more precise. + * * If you touch this code, please run this test which is so slow - * it was removed from the test suite + * it was removed from the test suite. Note that the original + * failure mode involves an infinite loop during tofile() * + * import tempfile, numpy as np + * from numpy.testing import (assert_) * fourgbplus = 2**32 + 2**16 * testbytes = np.arange(8, dtype=np.int8) * n = len(testbytes) @@ -177,8 +184,8 @@ PyArray_ToFile(PyArrayObject *self, FILE *fp, char *sep, char *format) * assert_((a[-n:] == testbytes).all()) */ { - npy_intp maxsize = 2147483648 / PyArray_DESCR(self)->elsize; - npy_intp chunksize; + size_t maxsize = 2147483648 / (size_t)PyArray_DESCR(self)->elsize; + size_t chunksize; n = 0; while (size > 0) { @@ -186,7 +193,7 @@ PyArray_ToFile(PyArrayObject *self, FILE *fp, char *sep, char *format) n2 = fwrite((const void *) ((char *)PyArray_DATA(self) + (n * PyArray_DESCR(self)->elsize)), (size_t) PyArray_DESCR(self)->elsize, - (size_t) chunksize, fp); + chunksize, fp); if (n2 < chunksize) { break; } |