ld signed overflow fix

[deliverable/binutils-gdb.git] / gdb / dwarf-index-cache.c

diff --git a/gdb/dwarf-index-cache.c b/gdb/dwarf-index-cache.c
index 7222f0528d7af82bd1d67ac763e2f42b4f9de92e..d00d6511abb43c60499cef4d8defe1cfa6fa7aec 100644 (file)
--- a/gdb/dwarf-index-cache.c
+++ b/gdb/dwarf-index-cache.c
@@ -23,17 +23,17 @@
 #include "build-id.h"
 #include "cli/cli-cmds.h"
 #include "command.h"
-#include "common/scoped_mmap.h"
-#include "common/pathstuff.h"
+#include "gdbsupport/scoped_mmap.h"
+#include "gdbsupport/pathstuff.h"
 #include "dwarf-index-write.h"
 #include "dwarf2read.h"
 #include "objfiles.h"
-#include "common/selftest.h"
+#include "gdbsupport/selftest.h"
 #include <string>
 #include <stdlib.h>
 
-/* When set to 1, show debug messages about the index cache.  */
-static int debug_index_cache = 0;
+/* When set to true, show debug messages about the index cache.  */
+static bool debug_index_cache = false;
 
 /* The index cache directory, used for "set/show index-cache directory".  */
 static char *index_cache_directory = NULL;
@@ -93,6 +93,7 @@ index_cache::store (struct dwarf2_per_objfile *dwarf2_per_objfile)
   if (!enabled ())
     return;
 
+  /* Get build id of objfile.  */
   const bfd_build_id *build_id = build_id_bfd_get (obj->obfd);
   if (build_id == nullptr)
     {
@@ -102,14 +103,35 @@ index_cache::store (struct dwarf2_per_objfile *dwarf2_per_objfile)
       return;
     }
 
+  std::string build_id_str = build_id_to_string (build_id);
+
+  /* Get build id of dwz file, if present.  */
+  gdb::optional<std::string> dwz_build_id_str;
+  const dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile);
+  const char *dwz_build_id_ptr = NULL;
+
+  if (dwz != nullptr)
+    {
+      const bfd_build_id *dwz_build_id = build_id_bfd_get (dwz->dwz_bfd.get ());
+
+      if (dwz_build_id == nullptr)
+       {
+         if (debug_index_cache)
+           printf_unfiltered ("index cache: dwz objfile %s has no build id\n",
+                              dwz->filename ());
+         return;
+       }
+
+      dwz_build_id_str = build_id_to_string (dwz_build_id);
+      dwz_build_id_ptr = dwz_build_id_str->c_str ();
+    }
+
   if (m_dir.empty ())
     {
       warning (_("The index cache directory name is empty, skipping store."));
       return;
     }
 
-  std::string build_id_str = build_id_to_string (build_id);
-
   try
     {
       /* Try to create the containing directory.  */
@@ -122,12 +144,13 @@ index_cache::store (struct dwarf2_per_objfile *dwarf2_per_objfile)
 
       if (debug_index_cache)
         printf_unfiltered ("index cache: writing index cache for objfile %s\n",
-                        objfile_name (obj));
+                          objfile_name (obj));
 
       /* Write the index itself to the directory, using the build id as the
          filename.  */
       write_psymtabs_to_index (dwarf2_per_objfile, m_dir.c_str (),
-                              build_id_str.c_str (), dw_index_kind::GDB_INDEX);
+                              build_id_str.c_str (), dwz_build_id_ptr,
+                              dw_index_kind::GDB_INDEX);
     }
   catch (const gdb_exception_error &except)
     {
@@ -317,12 +340,12 @@ _initialize_index_cache ()
 
   /* set index-cache */
   add_prefix_cmd ("index-cache", class_files, set_index_cache_command,
-                 _("Set index-cache options"), &set_index_cache_prefix_list,
+                 _("Set index-cache options."), &set_index_cache_prefix_list,
                  "set index-cache ", false, &setlist);
 
   /* show index-cache */
   add_prefix_cmd ("index-cache", class_files, show_index_cache_command,
-                 _("Show index-cache options"), &show_index_cache_prefix_list,
+                 _("Show index-cache options."), &show_index_cache_prefix_list,
                  "show index-cache ", false, &showlist);
 
   /* set index-cache on */