Fix seccomp sandbox for gcc44

sandbox/linux/seccomp/sandbox.cc

 #include "library.h"
 #include "sandbox_impl.h"
 #include "syscall_table.h"
 
 namespace playground {
 
 // Global variables
 int                           Sandbox::pid_;
 int                           Sandbox::processFdPub_;
 int                           Sandbox::cloneFdPub_;
@@ skipping 378 matching lines @@
         library->patchSystemCalls();
         library->makeWritable(false);
         break;
       }
     }
 
     // Intercept system calls in libraries that are known to have them.
     for (Maps::const_iterator iter = maps.begin(); iter != maps.end(); ++iter){
       Library* library = *iter;
       for (const char **ptr = libs; *ptr; ptr++) {
-        char *name = strstr(iter.name().c_str(), *ptr);
+        const char *name = strstr(iter.name().c_str(), *ptr);
         if (name) {
           char ch = name[strlen(*ptr)];
           if (ch < 'A' || (ch > 'Z' && ch < 'a') || ch > 'z') {
             library->makeWritable(true);
             library->patchSystemCalls();
             library->makeWritable(false);
             break;
           }
         }
       }
     }
   }
 
   // Take a snapshot of the current memory mappings. These mappings will be
   // off-limits to all future mmap(), munmap(), mremap(), and mprotect() calls.
   snapshotMemoryMappings(processFdPub_);
 
   // Creating the trusted thread enables sandboxing
   createTrustedThread(processFdPub_, cloneFdPub_, secureMem);
 }
 
 } // namespace