From a3675965499f3a939f7fd6848b2506d2e4ffdd46 Mon Sep 17 00:00:00 2001
From: Petr Viktorin <pviktori@redhat.com>
Date: Mon, 27 Nov 2017 15:33:45 +0100
Subject: [PATCH] Modules: Write out error checking in constants.c

---
 Lib/ldap/constants.py         |  5 ++---
 Modules/constants.c           | 30 ++++++++----------------------
 Modules/constants_generated.h | 15 ++++++---------
 3 files changed, 16 insertions(+), 34 deletions(-)

diff --git a/Lib/ldap/constants.py b/Lib/ldap/constants.py
index aafa265..c5ac6c1 100644
--- a/Lib/ldap/constants.py
+++ b/Lib/ldap/constants.py
@@ -61,11 +61,10 @@ class Feature(Constant):
     c_template = '\n'.join([
         '',
         '#ifdef {self.c_feature}',
-        'result = PyModule_AddIntConstant(m, "{self.name}", 1);',
+        'if (PyModule_AddIntConstant(m, "{self.name}", 1) != 0) return -1;',
         '#else',
-        'result = PyModule_AddIntConstant(m, "{self.name}", 0);',
+        'if (PyModule_AddIntConstant(m, "{self.name}", 0) != 0) return -1;',
         '#endif',
-        'check_result();',
         '',
     ])
 
diff --git a/Modules/constants.c b/Modules/constants.c
index 4fd09b8..8906581 100644
--- a/Modules/constants.c
+++ b/Modules/constants.c
@@ -131,18 +131,11 @@ int
 LDAPinit_constants( PyObject* m )
 {
     PyObject *exc;
-    int result;
-
-#define check_result() {  \
-    if (result != 0) return -1;  \
-}
 
     /* simple constants */
 
-    result = PyModule_AddIntConstant(m, "OPT_ON", 1);
-    check_result();
-    result = PyModule_AddIntConstant(m, "OPT_OFF", 0);
-    check_result();
+    if (PyModule_AddIntConstant(m, "OPT_ON", 1) != 0) return -1;
+    if (PyModule_AddIntConstant(m, "OPT_OFF", 0) != 0) return -1;
 
     /* exceptions */
 
@@ -151,36 +144,29 @@ LDAPinit_constants( PyObject* m )
         return -1;
     }
 
-    result = PyModule_AddObject(m, "LDAPError", LDAPexception_class);
-    check_result();
+    if (PyModule_AddObject(m, "LDAPError", LDAPexception_class) != 0) return -1;
     Py_INCREF(LDAPexception_class);
 
     /* XXX - backward compatibility with pre-1.8 */
-    result = PyModule_AddObject(m, "error", LDAPexception_class);
-    check_result();
+    if (PyModule_AddObject(m, "error", LDAPexception_class) != 0) return -1;
     Py_INCREF(LDAPexception_class);
 
     /* Generated constants -- see Lib/ldap/constants.py */
 
-#define seterrobj2(n, o) \
-    PyModule_AddObject(m, #n, (errobjects[LDAP_##n+LDAP_ERROR_OFFSET] = o))
-
 #define add_err(n) {  \
     exc = PyErr_NewException("ldap." #n, LDAPexception_class, NULL);  \
     if (exc == NULL) return -1;  \
-    result = seterrobj2(n, exc);  \
-    check_result();  \
+    errobjects[LDAP_##n+LDAP_ERROR_OFFSET] = exc;  \
+    if (PyModule_AddObject(m, #n, exc) != 0) return -1;  \
     Py_INCREF(exc);  \
 }
 
 #define add_int(n) {  \
-    result = PyModule_AddIntConstant(m, #n, LDAP_##n);  \
-    check_result();  \
+    if (PyModule_AddIntConstant(m, #n, LDAP_##n) != 0) return -1;  \
 }
 
 #define add_string(n) {  \
-    result = PyModule_AddStringConstant(m, #n, LDAP_##n);  \
-    check_result();  \
+    if (PyModule_AddStringConstant(m, #n, LDAP_##n) != 0) return -1;  \
 }
 
 #include "constants_generated.h"
diff --git a/Modules/constants_generated.h b/Modules/constants_generated.h
index 27addc9..083ba16 100644
--- a/Modules/constants_generated.h
+++ b/Modules/constants_generated.h
@@ -325,27 +325,24 @@ add_int(URL_ERR_BADSCOPE);
 add_int(URL_ERR_MEM);
 
 #ifdef HAVE_LIBLDAP_R
-result = PyModule_AddIntConstant(m, "LIBLDAP_R", 1);
+if (PyModule_AddIntConstant(m, "LIBLDAP_R", 1) != 0) return -1;
 #else
-result = PyModule_AddIntConstant(m, "LIBLDAP_R", 0);
+if (PyModule_AddIntConstant(m, "LIBLDAP_R", 0) != 0) return -1;
 #endif
-check_result();
 
 
 #ifdef HAVE_SASL
-result = PyModule_AddIntConstant(m, "SASL_AVAIL", 1);
+if (PyModule_AddIntConstant(m, "SASL_AVAIL", 1) != 0) return -1;
 #else
-result = PyModule_AddIntConstant(m, "SASL_AVAIL", 0);
+if (PyModule_AddIntConstant(m, "SASL_AVAIL", 0) != 0) return -1;
 #endif
-check_result();
 
 
 #ifdef HAVE_TLS
-result = PyModule_AddIntConstant(m, "TLS_AVAIL", 1);
+if (PyModule_AddIntConstant(m, "TLS_AVAIL", 1) != 0) return -1;
 #else
-result = PyModule_AddIntConstant(m, "TLS_AVAIL", 0);
+if (PyModule_AddIntConstant(m, "TLS_AVAIL", 0) != 0) return -1;
 #endif
-check_result();
 
 add_string(CONTROL_MANAGEDSAIT);
 add_string(CONTROL_PROXY_AUTHZ);