41 lines
1.4 KiB
Diff
41 lines
1.4 KiB
Diff
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This patch fixes a crash in the libxml2 bindings for Python 3.x
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that 'itstool' stumbles upon when processing UTF-8 data:
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https://issues.guix.gnu.org/issue/37468
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Patch by Jan Matejek
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from <https://bugzilla.opensuse.org/show_bug.cgi?id=1065270>.
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--- libxml2-2.9.5.orig/python/libxml.c
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+++ libxml2-2.9.5/python/libxml.c
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@@ -1620,6 +1620,7 @@ libxml_xmlErrorFuncHandler(ATTRIBUTE_UNU
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PyObject *message;
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PyObject *result;
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char str[1000];
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+ unsigned char *ptr = (unsigned char *)str;
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#ifdef DEBUG_ERROR
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printf("libxml_xmlErrorFuncHandler(%p, %s, ...) called\n", ctx, msg);
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@@ -1636,12 +1637,20 @@ libxml_xmlErrorFuncHandler(ATTRIBUTE_UNU
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str[999] = 0;
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va_end(ap);
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+#if PY_MAJOR_VERSION >= 3
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+ /* Ensure the error string doesn't start at UTF8 continuation. */
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+ while (*ptr && (*ptr & 0xc0) == 0x80)
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+ ptr++;
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+#endif
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+
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list = PyTuple_New(2);
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PyTuple_SetItem(list, 0, libxml_xmlPythonErrorFuncCtxt);
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Py_XINCREF(libxml_xmlPythonErrorFuncCtxt);
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- message = libxml_charPtrConstWrap(str);
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+ message = libxml_charPtrConstWrap(ptr);
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PyTuple_SetItem(list, 1, message);
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result = PyEval_CallObject(libxml_xmlPythonErrorFuncHandler, list);
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+ /* Forget any errors caused in the error handler. */
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+ PyErr_Clear();
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Py_XDECREF(list);
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Py_XDECREF(result);
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}
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