[PATCH] Fix return code in _bfd_dwarf2_find_nearest_line().

[Steinar H. Gunderson]

If we find a function name through the debug ranges, but no line
information, we will have found = false (unless we happened to be
in the last compilation unit).

This means _bfd_dwarf2_find_nearest_line() will return 0 (not found)
instead of 2 (partial information found), causing the caller
(_bfd_elf_find_nearest_line) to go through an expensive linear
traversal of all symbols (_bfd_elf_find_function) in a fallback
effort to find a function name. Fix the return code for this case.
---
 bfd/dwarf2.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/bfd/dwarf2.c b/bfd/dwarf2.c
index edbcb5069ae..4d232ba1f79 100644
--- a/bfd/dwarf2.c
+++ b/bfd/dwarf2.c
@@ -5602,7 +5602,11 @@ _bfd_dwarf2_find_nearest_line (bfd *abfd,
 
  done:
   if (functionname_ptr && function && function->is_linkage)
-    *functionname_ptr = function->name;
+    {
+      *functionname_ptr = function->name;
+      if (!found)
+        found = 2;
+    }
   else if (functionname_ptr
 	   && (!*functionname_ptr
 	       || (function && !function->is_linkage)))
-- 
2.35.1