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

[external/binutils.git] / gold / binary.cc

diff --git a/gold/binary.cc b/gold/binary.cc
index 12ca296..52df81a 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: