From: Michael W. Hudson <mwh@python.net>
Date: Fri, 11 Oct 2002 13:46:32 +0000 (+0000)
Subject: A test for the recent overflow-in-format-crash bug.
X-Git-Tag: v2.3c1~3817
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=549ab8a98d0d5981558660b414b9c0849d644795;p=thirdparty%2FPython%2Fcpython.git

A test for the recent overflow-in-format-crash bug.

Only runs when sys.maxint == 2**32 - 1; different things go wrong
on a 64-bit box.
---

diff --git a/Lib/test/test_format.py b/Lib/test/test_format.py
index be120fbd7e88..b40e8202f1b6 100644
--- a/Lib/test/test_format.py
+++ b/Lib/test/test_format.py
@@ -183,12 +183,12 @@ testboth("%#X", 0, "0X0")
 testboth("%#X", 0L, "0X0")
 
 testboth("%x", 0x42, "42")
-# testboth("%x", -0x42, "ffffffbe") # Alas, that's specific to 32-bit machines
+# testboth("%x", -0x42, "ffffffbe") # specific to 32-bit boxes; see below
 testboth("%x", 0x42L, "42")
 testboth("%x", -0x42L, "-42")
 
 testboth("%o", 042, "42")
-# testboth("%o", -042, "37777777736") # Alas, that's specific to 32-bit machines
+# testboth("%o", -042, "37777777736") # specific to 32-bit boxes; see below
 testboth("%o", 042L, "42")
 testboth("%o", -042L, "-42")
 
@@ -221,3 +221,15 @@ if have_unicode:
 
 test_exc('%d', '1', TypeError, "int argument required")
 test_exc('%g', '1', TypeError, "float argument required")
+
+if sys.maxint == 2**32-1:
+    # crashes 2.2.1 and earlier:
+    try:
+        "%*d"%(sys.maxint, -127)
+    except MemoryError:
+        pass
+    else:
+        raise TestFailed, '"%*d"%(sys.maxint, -127) should fail'
+    # (different things go wrong on a 64 bit box...)
+    testboth("%x", -0x42, "ffffffbe")
+    testboth("%o", -042, "37777777736")