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Don't abort on FT2Font weakref. by anntzer · Pull Request #9074 · matplotlib/matplotlib · GitHub

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  2. matplotlib

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Don't abort on FT2Font weakref. #9074

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Merged
tacaswell merged 1 commit into from
Feb 11, 2018
Conversation 7 Commits 1 Checks 0 Files changed
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Don't abort on FT2Font weakref. #9074

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30 changes: 25 additions & 5 deletions src/file_compat.h
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Original file line number Diff line number Diff line change
Expand Up @@ -126,6 +126,9 @@ static NPY_INLINE FILE *mpl_PyFile_Dup(PyObject *file, char *mode, mpl_off_t *or
*/
static NPY_INLINE int mpl_PyFile_DupClose(PyObject *file, FILE *handle, mpl_off_t orig_pos)
{
PyObject *exc_type = NULL, *exc_value = NULL, *exc_tb = NULL;
PyErr_Fetch(&exc_type, &exc_value, &exc_tb);

int fd;
PyObject *ret;
mpl_off_t position;
Expand All @@ -136,25 +139,33 @@ static NPY_INLINE int mpl_PyFile_DupClose(PyObject *file, FILE *handle, mpl_off_
fclose(handle);

/* Restore original file handle position, in order to not confuse
Python-side data structures */
Python-side data structures. Note that this would fail if an exception
is currently set, which can happen as this function is called in cleanup
code, so we need to carefully fetch and restore the exception state. */
fd = PyObject_AsFileDescriptor(file);
if (fd == -1) {
return -1;
goto fail;
}
if (mpl_lseek(fd, orig_pos, SEEK_SET) != -1) {
if (position == -1) {
PyErr_SetString(PyExc_IOError, "obtaining file position failed");
return -1;
goto fail;
}

/* Seek Python-side handle to the FILE* handle position */
ret = PyObject_CallMethod(file, (char *)"seek", (char *)(MPL_OFF_T_PYFMT "i"), position, 0);
if (ret == NULL) {
return -1;
goto fail;
}
Py_DECREF(ret);
}
PyErr_Restore(exc_type, exc_value, exc_tb);
return 0;
fail:
Py_XDECREF(exc_type);
Py_XDECREF(exc_value);
Py_XDECREF(exc_tb);
return -1;
}

static NPY_INLINE int mpl_PyFile_Check(PyObject *file)
Expand Down Expand Up @@ -200,14 +211,23 @@ static NPY_INLINE PyObject *mpl_PyFile_OpenFile(PyObject *filename, const char *

static NPY_INLINE int mpl_PyFile_CloseFile(PyObject *file)
{
PyObject *type, *value, *tb;

QuLogic Feb 3, 2018

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Choose a reason Spam Abuse Off Topic Outdated Duplicate Resolved Low Quality

... and here too.

anntzer Feb 3, 2018

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Choose a reason Spam Abuse Off Topic Outdated Duplicate Resolved Low Quality

as above
PyErr_Fetch(&type, &value, &tb);

PyObject *ret;

ret = PyObject_CallMethod(file, (char *)"close", NULL);
if (ret == NULL) {
return -1;
goto fail;
}
Py_DECREF(ret);
PyErr_Restore(type, value, tb);
return 0;
fail:
Py_XDECREF(type);
Py_XDECREF(value);
Py_XDECREF(tb);
return -1;
}

#ifdef __cplusplus
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