From: Stefan Behnel <stefan_ml@behnel.de>
Date: Wed, 1 May 2013 11:20:14 +0000 (+0200)
Subject: suppress warnings about unused error status variables in functions
X-Git-Tag: 0.19.1~28
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=5bc9ddec230c555dd1e518dc04678ad02d58b87c;p=platform%2Fupstream%2Fpython-cython.git

suppress warnings about unused error status variables in functions
---

diff --git a/Cython/Compiler/Code.py b/Cython/Compiler/Code.py
index 6f144f5..2bfa0b9 100644
--- a/Cython/Compiler/Code.py
+++ b/Cython/Compiler/Code.py
@@ -501,6 +501,7 @@ class FunctionState(object):
         # However, exceptions may need to be propagated through 'nogil'
         # sections, in which case we introduce a race condition.
         self.should_declare_error_indicator = False
+        self.uses_error_indicator = False
 
     # labels
 
@@ -1625,10 +1626,14 @@ class CCodeWriter(object):
                 self.putln("%s%s;" % (static and "static " or "", decl))
 
         if func_context.should_declare_error_indicator:
+            if self.funcstate.uses_error_indicator:
+                unused = ''
+            else:
+                unused = 'CYTHON_UNUSED '
             # Initialize these variables to silence compiler warnings
-            self.putln("int %s = 0;" % Naming.lineno_cname)
-            self.putln("const char *%s = NULL;" % Naming.filename_cname)
-            self.putln("int %s = 0;" % Naming.clineno_cname)
+            self.putln("%sint %s = 0;" % (unused, Naming.lineno_cname))
+            self.putln("%sconst char *%s = NULL;" % (unused, Naming.filename_cname))
+            self.putln("%sint %s = 0;" % (unused, Naming.clineno_cname))
 
     def put_h_guard(self, guard):
         self.putln("#ifndef %s" % guard)
@@ -1975,6 +1980,7 @@ class CCodeWriter(object):
             Naming.lineno_cname,
             Naming.filename_cname,
         )
+        self.funcstate.uses_error_indicator = True
         self.putln('__Pyx_AddTraceback("%s", %s, %s, %s);' % format_tuple)
 
     def put_trace_declarations(self):