add test to prevent segfault

1 files changed, 4 insertions, 2 deletions

diff --git a/pyisda/curve.pyx b/pyisda/curve.pyx
index 6ceee57..f33db25 100644
--- a/pyisda/curve.pyx
+++ b/pyisda/curve.pyx
@@ -183,11 +183,13 @@ cdef class SpreadCurve(Curve):
         cdef TDate* end_dates_c = <TDate*>malloc(len(end_dates) * sizeof(TDate))
         self._thisptr = NULL
         cdef size_t i
-
+        if cash_settle_date < yc.inspect()['base_date']:
+            raise ValueError("cash_settle_date: {0} is anterior to yc's base_date: {1}".
+                             format(cash_settle_date, yc.inspect()['base_date']))
         for i, d in enumerate(end_dates):
             end_dates_c[i] = pydate_to_TDate(d)
-        cdef TStubMethod stub_type
 
+        cdef TStubMethod stub_type
         if JpmcdsStringToStubMethod(b"f/s", &stub_type) != 0:
             raise ValueError("can't convert stub")