#37794 log(0,2) shouldn't hang

Author: DaveWitteMorris

src/sage/misc/functional.py

@@ -1137,6 +1137,13 @@ def log(*args, **kwds):
 
         sage: log(0, 2)
         -Infinity
+
+    Check if :issue:`37794` is fixed::
+
+        sage: log(int(0), 2)
+        -Infinity
+        sage: log(int(0), 1/2)
+        +Infinity
     """
     base = kwds.pop('base', None)
     if base:

src/sage/symbolic/ginac/numeric.cpp

@@ -3688,6 +3688,9 @@ const numeric numeric::ratlog(const numeric &b, bool& israt) const {
                         israt = false;
                         return *_num0_p;
                 }
+                if (v._long == 0) {
+                        return py_funcs.py_eval_neg_infinity();
+                }
                 int c = 0;
                 std::ldiv_t ld;
                 ld.quot = v._long;