ANSI C compatibility

Cython/Compiler/Buffer.py

@@ -748,7 +748,7 @@ def get_type_information_cname(code, dtype, maxdepth=None):
         typeinfo = ('static __Pyx_TypeInfo %s = '
                         '{ "%s", %s, sizeof(%s), { %s }, %s, \'%s\', %s, %s };')
         tup = (name, rep, structinfo_name, declcode,
-               ', '.join([str(x) for x in arraysizes]), len(arraysizes),
+               ', '.join([str(x) for x in arraysizes]) or '0', len(arraysizes),
                typegroup, is_unsigned, flags)
         typecode.putln(typeinfo % tup, safe=True)
 

Cython/Utility/MemoryView_C.c

@@ -3,6 +3,8 @@
 
 /* memoryview slice struct */
 
+struct {{memview_struct_name}};
+
 typedef struct {
   struct {{memview_struct_name}} *memview;
   char *data;
@@ -48,6 +50,7 @@ typedef struct {
         #warning "Using Intel atomics"
     #endif
 #else
+    #undef CYTHON_ATOMICS
     #define CYTHON_ATOMICS 0
 
     #ifdef __PYX_DEBUG_ATOMICS