2006-12-19 Frank Ch. Eigler <fche@redhat.com>

	PR 3522.
	* tapsets.cxx (dwflpp::emit_address): Call
	_stp_module_relocate only once per session.

	Error message cleanup: duplicate elimination etc.
	* session.h (saved_errors): Store a set of 'em.
	(num_errors): Return set size.  Remove old numeric field.
	Update all callers.
	* elaborate.cxx (systemtap_session::print_errors):
	Print each encountered message just once.
	* staptree (semantic_error): Make msg2 writeable.
	Add a chain field.
	* tapsets.cxx (*var_expanding*:visit_target_symbol): Set saved
	semantic_error's chain field.
	* elaborate.cxx (register_library_aliases, visit_foreach_loop,
	visit_functioncall, derive_probes): Plop "while: ..." error
	message	prefix/suffix right into the semantic_error message string.
	* parse.cxx (lexer::scan): Identify erroneous token better
	in error message for unresolvable $N/@M command line args.
	* util.h (lex_cast_hex): Use std::hex, not std::ios::hex.

2006-12-19  Frank Ch. Eigler  <fche@redhat.com>

	PR 3522.
	* buildok/twentyfive.stp: New test for static $var access.

1 files changed, 3 insertions, 1 deletions

diff --git a/session.h b/session.h
index 0a0bfb8a..ce977471 100644
--- a/session.h
+++ b/session.h
@@ -14,6 +14,7 @@
 #include <iostream>
 #include <sstream>
 #include <map>
+#include <set>
 
 extern "C" {
 #include <elfutils/libdw.h>
@@ -139,7 +140,8 @@ struct systemtap_session
   Dwarf_Addr kprobes_text_start;
   Dwarf_Addr kprobes_text_end;
 
-  unsigned num_errors;
+  std::set<std::string> seen_errors;
+  unsigned num_errors () { return seen_errors.size(); }
   // void print_error (const parse_error& e);
   void print_error (const semantic_error& e);