Hi I've just tried to build the guppy version from SVN and run the test suite with Python 2.7 on an amd64 machine. The test suite already fails test1 in guppy/sets/test.py. I've also tried on a 32 bit machine and and their it didn't fail.
The reason is simple: _PyLong_Frexp takes a Py_ssize_t* as second argument but a int* is passed. Therefor _PyLong_Frexp messes with other variables on the stack since Py_ssize_t is larger than int on amd64. Attached is a patch to fix this issues. Kind regards, -- Sebastian Ramacher
Index: src/sets/bitset.c
===================================================================
--- src/sets/bitset.c (revision 90)
+++ src/sets/bitset.c (working copy)
@@ -2011,7 +2011,11 @@
{
NyBits *buf;
int r = -1;
+#if PY_VERSION_HEX >= 0x02070000
+ Py_ssize_t e;
+#else
int e;
+#endif
long num_poses, num_bytes;
double num_bits, x;
int cpl = 0;
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