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, 7 insertions, 7 deletions

diff --git a/translate.cxx b/translate.cxx
index 9c901065..f2e04d7d 100644
--- a/translate.cxx
+++ b/translate.cxx
@@ -4779,7 +4779,7 @@ dump_unwindsyms (Dwfl_Module *m,
       // likely can't do anything about this; backtraces for the
       // affected module would just get all icky heuristicy.
       // So only report in verbose mode.
-      if (c->session.verbose > 2)
+      if (c->session.verbose > 2 && ! c->session.suppress_warnings)
 	c->session.print_warning ("No unwind data for " + modname
 				  + ", " + dwfl_errmsg (-1));
     }
@@ -5080,12 +5080,12 @@ emit_symbol_data_done (unwindsym_dump_context *ctx, systemtap_session& s)
 		<< ";\n";
 
   // Some nonexistent modules may have been identified with "-d".  Note them.
-  for (set<string>::iterator it = ctx->undone_unwindsym_modules.begin();
-       it != ctx->undone_unwindsym_modules.end();
-       it ++)
-    {
-      s.print_warning ("missing unwind/symbol data for module '" + (*it) + "'");
-    }
+  if (! s.suppress_warnings)
+    for (set<string>::iterator it = ctx->undone_unwindsym_modules.begin();
+	 it != ctx->undone_unwindsym_modules.end();
+	 it ++)
+      s.print_warning ("missing unwind/symbol data for module '"
+		       + (*it) + "'");
 }