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.cxx b/dwflpp.cxx
index 74a79cfa..8a02fc6a 100644
--- a/dwflpp.cxx
+++ b/dwflpp.cxx
@@ -1000,7 +1000,7 @@ dwflpp::iterate_over_labels (Dwarf_Die *begin_die,
 
 void
 dwflpp::collect_srcfiles_matching (string const & pattern,
-                                   set<char const *> & filtered_srcfiles)
+                                   set<string> & filtered_srcfiles)
 {
   assert (module);
   assert (cu);