PR gold/17473: Fix gold build with system C++ headers that use <ctype.h>.

gold/
	PR gold/17473
	* binary.cc: Move #include "safe-ctype.h" to be last #include.

(cherry picked from commit 95c29a83ebadd0038fd304539a83c5e90798c1b9)

diff --git a/gold/ChangeLog b/gold/ChangeLog
index 5f3ec40dbedda4d62e1b8aecfeaa339a50643d54..b283a8843285e1ec82d4b63734c98b9642bf81a9 100644 (file)
--- a/gold/ChangeLog
+++ b/gold/ChangeLog
@@ -1,3 +1,8 @@
+2015-12-16  Roland McGrath  <mcgrathr@google.com>
+
+       PR ld/17473
+       * binary.cc: Move #include "safe-ctype.h" to be last #include.
+
 2015-12-10  Alan Modra  <amodra@gmail.com>
 
        Apply from master.

diff --git a/gold/binary.cc b/gold/binary.cc
index 12ca296eb90670da8eb16cb9e85d9ca1cac3fe1e..52df81adce2f13b3af23bca48c22be74bec5f259 100644 (file)
--- a/gold/binary.cc
+++ b/gold/binary.cc
@@ -24,7 +24,6 @@
 
 #include <cerrno>
 #include <cstring>
-#include "safe-ctype.h"
 
 #include "elfcpp.h"
 #include "stringpool.h"
@@ -32,6 +31,13 @@
 #include "output.h"
 #include "binary.h"
 
+// safe-ctype.h interferes with macros defined by the system <ctype.h>.
+// Some C++ system headers might include <ctype.h> and rely on its macro
+// definitions being intact.  So make sure that safe-ctype.h is included
+// only after any C++ system headers, whether directly here (above) or via
+// other local header files (e.g. #include <string> in "binary.h").
+#include "safe-ctype.h"
+
 // Support for reading binary files as input.  These become blobs in
 // the final output.  These files are treated as though they have a
 // single .data section and define three symbols: