struct psi_decl_abi *psi_decl_abi_init(zend_string *convention)
{
struct psi_decl_abi *abi = calloc(1, sizeof(*abi));
- abi->convention = zend_string_copy(convention);
+ abi->convention = convention
+ ? zend_string_copy(convention)
+ : zend_string_init(ZEND_STRL("default"), 1);
return abi;
}