GCC rightfully complains about redefined variables, as iterator declarations
appear inside loops with a loop variable of the same name.

This patch has been sent upstream.

--- a/sets.cpp	2015-06-25 11:22:08.252821681 +0200
+++ b/sets.cpp	2015-06-25 11:22:23.239187985 +0200
@@ -768,11 +768,11 @@
       //////////////////////////////////////////////
       // Reset original missing status
 
-      vector<Individual*>::iterator i = PP->sample.begin();
-      while ( i != PP->sample.end() )
+      vector<Individual*>::iterator it = PP->sample.begin();
+      while ( it != PP->sample.end() )
 	{
-	  (*i)->missing = (*i)->flag;
-	  ++i;
+	  (*it)->missing = (*it)->flag;
+	  ++it;
 	}
 
       ////////////////////////////////////////////////

--- a/elf.cpp	2009-10-10 18:00:21.000000000 +0200
+++ b/elf.cpp	2015-06-25 11:34:06.136835756 +0200
@@ -1175,10 +1175,10 @@
 	  << setw(8) << gcnt << " "
 	  << setw(8) << (double)cnt / (double)gcnt << "\n";
 
-      map<int,int>::iterator i = chr_cnt.begin();
-      while ( i != chr_cnt.end() )
+      map<int,int>::iterator it = chr_cnt.begin();
+      while ( it != chr_cnt.end() )
 	{
-	  int c = i->first;
+	  int c = it->first;
 	  int x = chr_cnt.find( c )->second;
 	  int y = chr_gcnt.find( c )->second;
 	  
@@ -1189,7 +1189,7 @@
 	      << setw(8) << y << " "
 	      << setw(8) << (double)x / (double)y << "\n";
 	  
-	  ++i;
+	  ++it;
 	}
       
     }

--- plink-1.07-src/idhelp.cpp	2009-10-10 18:00:22.000000000 +0200
+++ plink-1.07-src/idhelp.cpp.patched	2015-06-25 11:37:39.387204086 +0200
@@ -772,12 +772,12 @@
       for (int j = 0 ; j < jointField.size(); j++ )
 	{
 	  set<IDField*> & jf = jointField[j];
-	  set<IDField*>::iterator j = jf.begin();
+	  set<IDField*>::iterator jit = jf.begin();
 	  PP->printLOG(" { ");
-	  while ( j != jf.end() )
+	  while ( jit != jf.end() )
 	    {
-	      PP->printLOG( (*j)->name + " " );
-	      ++j;
+	      PP->printLOG( (*jit)->name + " " );
+	      ++jit;
 	    }
 	  PP->printLOG(" }");
 	}
iv class='path'>path: <a href='/guix/log/?id=fc45f2fcf8c1cd19fa162d5c8fd43956f442f11d'>root</a>/<a href='/guix/log/gnu?id=fc45f2fcf8c1cd19fa162d5c8fd43956f442f11d'>gnu</a>/<a href='/guix/log/gnu/packages?id=fc45f2fcf8c1cd19fa162d5c8fd43956f442f11d'>packages</a>/<a href='/guix/log/gnu/packages/node.scm?id=fc45f2fcf8c1cd19fa162d5c8fd43956f442f11d'>node.scm</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/gnu/packages/node.scm?id=fc45f2fcf8c1cd19fa162d5c8fd43956f442f11d&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2020-06-13 20:04:51 +0200'>2020-06-13</span></td><td><a href='/guix/commit/gnu/packages/node.scm?id=e8521f0b95bf0cc5a08bca0b8b14e07b18d51a81'>gnu: libnode: Delete unused phase.</a><span class='msg-avail'>...</span></td><td>Ricardo Wurmus</td></tr>
<tr><td><span title='2020-06-13 17:02:26 +0200'>2020-06-13</span></td><td><a href='/guix/commit/gnu/packages/node.scm?id=2f38e38fb5131858fc76f6fa99c9f99776ff2902'>Revert "gnu: node: Build shared library."</a><span class='msg-avail'>...</span></td><td>Ricardo Wurmus</td></tr>
<tr><td><span title='2020-06-13 17:02:26 +0200'>2020-06-13</span></td><td><a href='/guix/commit/gnu/packages/node.scm?id=bb310a1976198eacdc67e0712e19735cd656b21d'>gnu: Add libnode.</a><span class='msg-avail'>...</span></td><td>Ricardo Wurmus</td></tr>
<tr><td><span title='2020-06-13 01:19:39 +0200'>2020-06-13</span></td><td><a href='/guix/commit/gnu/packages/node.scm?id=f9311eaa7cb7849e9b17162c93b874c74d8fcbbd'>gnu: node: Build shared library.</a><span class='msg-avail'>...</span></td><td>Ricardo Wurmus</td></tr>
<tr><td><span title='2020-03-04 23:16:17 +0100'>2020-03-04</span></td><td><a href='/guix/commit/gnu/packages/node.scm?id=ebb7cf9e21060105d9950dd5142c0eb918083666'>Merge branch 'master' into core-updates</a></td><td>Marius Bakke</td></tr>
<tr><td><span title='2020-02-26 21:52:47 +0100'>2020-02-26</span></td><td><a href='/guix/commit/gnu/packages/node.scm?id=5cfc6a88e9fbb9f34855ebd43264266b0201ce50'>gnu: node: Disable failing tests on armhf-linux.</a><span class='msg-avail'>...</span></td><td>Marius Bakke</td></tr>
<tr><td><span title='2020-02-26 21:52:47 +0100'>2020-02-26</span></td><td><a href='/guix/commit/gnu/packages/node.scm?id=458c3ff552005cbf69ed4a1daee3529214ae73cf'>gnu: node: Update to 10.19.0.</a><span class='msg-avail'>...</span></td><td>Marius Bakke</td></tr>
<tr><td><span title='2020-02-24 17:10:22 +0100'>2020-02-24</span></td><td><a href='/guix/commit/gnu/packages/node.scm?id=b4481f2df1ac0e24a41a06671e99e88a5e2c9d2d'>gnu: node: Increase build timeouts.</a><span class='msg-avail'>...</span></td><td>Marius Bakke</td></tr>
<tr><td><span title='2020-02-14 19:05:45 +0100'>2020-02-14</span></td><td><a href='/guix/commit/gnu/packages/node.scm?id=7edafc884c2a21258541b17a231051702c458263'>Merge branch 'master' into core-updates</a>