PR10459. Disable all warning messages on -w.

* stap.1.in: Document that -w disables all warning messages.
* dwflpp.cxx (get_module_dwarf): Only output warning when session
  suppress_warnings is not set.
* translate.cxx (dump_unwindsyms): Likewise.
  (emit_symbol_data_done): Likewise.
* tapsets.cxx (query_module_symtab): Likewise.
  (read_from_elf_file): Take systemtap_session, check suppress_warnings
  before emitting warning.
  (read_from_text_file): Likewise.
  (get_symtab): Call read_from_elf_file and read_from_text_file with session.

1 files changed, 1 insertions, 1 deletions

diff --git a/dwflpp.cxx b/dwflpp.cxx
index 01cfddaa..e6e7b471 100644
--- a/dwflpp.cxx
+++ b/dwflpp.cxx
@@ -124,7 +124,7 @@ dwflpp::get_module_dwarf(bool required, bool report)
 
       if (required)
         throw semantic_error (msg);
-      else
+      else if (! sess.suppress_warnings)
         cerr << "WARNING: " << msg << "\n";
     }
 }