From d4814bfa232371d7339e2b3a16e6669fb7828c49 Mon Sep 17 00:00:00 2001
From: Mark Dickinson <dickinsm@gmail.com>
Date: Sun, 29 Mar 2009 16:24:29 +0000
Subject: [PATCH] Issue #532631: Apply floatformat changes to unicodeobject.c
 as well as stringobject.c.

---
 Objects/unicodeobject.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/Objects/unicodeobject.c b/Objects/unicodeobject.c
index 4ce9bed1894..6edc2f8347c 100644
--- a/Objects/unicodeobject.c
+++ b/Objects/unicodeobject.c
@@ -8286,6 +8286,15 @@ formatfloat(Py_UNICODE *buf,
         return -1;
     if (prec < 0)
         prec = 6;
+    /* make sure that the decimal representation of precision really does
+       need at most 10 digits: platforms with sizeof(int) == 8 exist! */
+    if (prec > 0x7fffffffL) {
+        PyErr_SetString(PyExc_OverflowError,
+                        "outrageously large precision "
+                        "for formatted float");
+        return -1;
+    }
+
     if (type == 'f' && fabs(x) >= 1e50)
         type = 'g';
     /* Worst case length calc to ensure no buffer overrun: