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Prevent crash in GMPy_MPFR_Format() #526

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Prevent crash in GMPy_MPFR_Format() #526

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4 changes: 4 additions & 0 deletions src/gmpy2_format.c
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Original file line number Diff line number Diff line change
Expand Up @@ -319,6 +319,10 @@ GMPy_MPFR_Format(PyObject *self, PyObject *args)
*(p3) = '\00';

buflen = mpfr_asprintf(&buffer, mpfrfmt, MPFR(self));
if (buflen == -1) {
RUNTIME_ERROR("Number of characters written exceeds the INT_MAX");
return NULL;
}

/* If there isn't a decimal point in the output and the output
* only consists of digits, then append .0 */
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