Put PUBLIC lines in Mac and Linux symbol files

src/common/stabs_to_module_unittest.cc

Index: src/common/stabs_to_module_unittest.cc
===================================================================
--- a/src/common/stabs_to_module_unittest.cc
+++ b/src/common/stabs_to_module_unittest.cc
@@ -69,16 +69,41 @@ TEST(StabsToModule, SimpleCU) {
   ASSERT_EQ((size_t) 1, function->lines.size());
   Module::Line *line = &function->lines[0];
   EXPECT_EQ(0xfde4abbed390c394LL, line->address);
   EXPECT_EQ(0x10U, line->size); // derived from EndFunction
   EXPECT_TRUE(line->file == file);
   EXPECT_EQ(174823314, line->number);
 }
 
+TEST(StabsToModule, Externs) {
+  Module m("name", "os", "arch", "id");
+  StabsToModule h(&m);
+
+  // Feed in a few Extern symbols.
+  EXPECT_TRUE(h.Extern("_foo", 0xffff));
+  EXPECT_TRUE(h.Extern("__Z21dyldGlobalLockAcquirev", 0xaaaa));
+  EXPECT_TRUE(h.Extern("_MorphTableGetNextMorphChain", 0x1111));
+  h.Finalize();
+
+  // Now check to see what has been added to the Module.
+  vector<Module::Extern *> externs;
+  m.GetExterns(&externs, externs.end());
+  ASSERT_EQ((size_t) 3, externs.size());
+  Module::Extern *extern1 = externs[0];
+  EXPECT_STREQ("MorphTableGetNextMorphChain", extern1->name.c_str());
+  EXPECT_EQ((Module::Address)0x1111, extern1->address);
+  Module::Extern *extern2 = externs[1];
+  EXPECT_STREQ("dyldGlobalLockAcquire()", extern2->name.c_str());
+  EXPECT_EQ((Module::Address)0xaaaa, extern2->address);
+  Module::Extern *extern3 = externs[2];
+  EXPECT_STREQ("foo", extern3->name.c_str());
+  EXPECT_EQ((Module::Address)0xffff, extern3->address);
+}
+
 TEST(StabsToModule, DuplicateFunctionNames) {
   Module m("name", "os", "arch", "id");
   StabsToModule h(&m);
 
   // Compilation unit with one function, mangled name.
   EXPECT_TRUE(h.StartCompilationUnit("compilation-unit", 0xf2cfda36ecf7f46cLL,
                                      "build-directory"));
   EXPECT_TRUE(h.StartFunction("funcfoo",