unittests: fix -Wnarrowing build errors

src/common/dwarf/dwarf2diehandler_unittest.cc

 // -*- mode: c++ -*-
 
 // Copyright (c) 2010 Google Inc. All Rights Reserved.
 //
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 // notice, this list of conditions and the following disclaimer.
@@ skipping 49 matching lines @@
 
 class MockDIEHandler: public DIEHandler {
  public:
   MOCK_METHOD3(ProcessAttributeUnsigned,
                void(DwarfAttribute, DwarfForm, uint64));
   MOCK_METHOD3(ProcessAttributeSigned,
                void(DwarfAttribute, DwarfForm, int64));
   MOCK_METHOD3(ProcessAttributeReference,
                void(DwarfAttribute, DwarfForm, uint64));
   MOCK_METHOD4(ProcessAttributeBuffer,
-               void(DwarfAttribute, DwarfForm, const char *, uint64));
+               void(DwarfAttribute, DwarfForm, const uint8_t *, uint64));
   MOCK_METHOD3(ProcessAttributeString,
                void(DwarfAttribute, DwarfForm, const string &));
   MOCK_METHOD3(ProcessAttributeSignature,
                void(DwarfAttribute, DwarfForm, uint64));
   MOCK_METHOD0(EndAttributes, bool());
   MOCK_METHOD2(FindChildHandler, DIEHandler *(uint64, DwarfTag));
   MOCK_METHOD0(Finish, void());
 };
 
 class MockRootDIEHandler: public RootDIEHandler {
  public:
   MOCK_METHOD3(ProcessAttributeUnsigned,
                void(DwarfAttribute, DwarfForm, uint64));
   MOCK_METHOD3(ProcessAttributeSigned,
                void(DwarfAttribute, DwarfForm, int64));
   MOCK_METHOD3(ProcessAttributeReference,
                void(DwarfAttribute, DwarfForm, uint64));
   MOCK_METHOD4(ProcessAttributeBuffer,
-               void(DwarfAttribute, DwarfForm, const char *, uint64));
+               void(DwarfAttribute, DwarfForm, const uint8_t *, uint64));
   MOCK_METHOD3(ProcessAttributeString,
                void(DwarfAttribute, DwarfForm, const string &));
   MOCK_METHOD3(ProcessAttributeSignature,
                void(DwarfAttribute, DwarfForm, uint64));
   MOCK_METHOD0(EndAttributes, bool());
   MOCK_METHOD2(FindChildHandler, DIEHandler *(uint64, DwarfTag));
   MOCK_METHOD0(Finish, void());
   MOCK_METHOD5(StartCompilationUnit, bool(uint64, uint8, uint8, uint64, uint8));
   MOCK_METHOD2(StartRootDIE, bool(uint64, DwarfTag));
 };
@@ skipping 78 matching lines @@
   die_dispatcher.EndDIE(0x435150ceedccda18LL);
   die_dispatcher.EndDIE(0x7d08242b4b510cf2LL);
 }
 
 // The dispatcher should pass attribute values through to the die
 // handler accurately.
 TEST(Dwarf2DIEHandler, PassAttributeValues) {
   MockRootDIEHandler mock_root_handler;
   DIEDispatcher die_dispatcher(&mock_root_handler);
 
-  const char buffer[10] = { 0x24, 0x24, 0x35, 0x9a, 0xca,
-                            0xcf, 0xa8, 0x84, 0xa7, 0x18 };
+  const uint8_t buffer[10] = {
+    0x24, 0x24, 0x35, 0x9a, 0xca, 0xcf, 0xa8, 0x84, 0xa7, 0x18
+  };
   string str = "\xc8\x26\x2e\x0d\xa4\x9c\x37\xd6\xfb\x1d";
 
   // Set expectations.
   {
     InSequence s;
 
     // We'll like the compilation unit header.
     EXPECT_CALL(mock_root_handler,
                 StartCompilationUnit(0x8d42aed77cfccf3eLL, 0x89, 0xdc,
                                      0x2ecb4dc778a80f21LL, 0x66))
@@ skipping 315 matching lines @@
         // Stop the traversal abruptly, so that there will still be
         // handlers on the stack when the dispatcher is destructed.
 
         // No EndDIE call...
       }
       // No EndDIE call...
     }
     // No EndDIE call...
   }
 }