PR2475: Filter filenames against the decl_file

We used to only check that a CU contains at least one srcfile matching
the user's file spec.  This patch ensures that the selected function was
actually defined in one of the matching srcfiles.

* tapsets.cxx (struct dwarf_query): Make filtered_srcfiles carry
  strings, so we can easily lookup matches later.
  (query_dwarf_func): Check that the decl_file is in filtered_srcfiles.
  (query_cu): Adjust to using set<string>.
* dwflpp.cxx (dwflpp::collect_srcfiles_matching): Take a set<string>.

1 files changed, 1 insertions, 1 deletions

diff --git a/dwflpp.h b/dwflpp.h
index b376d004..d31d2219 100644
--- a/dwflpp.h
+++ b/dwflpp.h
@@ -223,7 +223,7 @@ struct dwflpp
                                               dwarf_query *));
 
   void collect_srcfiles_matching (std::string const & pattern,
-                                  std::set<char const *> & filtered_srcfiles);
+                                  std::set<std::string> & filtered_srcfiles);
 
   void resolve_prologue_endings (func_info_map_t & funcs);