Let x86 stackwalker scan stack in cases where program evaluation fails. Original patch by Jeff Muizelaar <jmuizelaar@mozilla.com> with some changes by me. r=mento at http://breakpad.appspot.com/32003/show

git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@409 4c0a9323-5329-0410-9bdc-e9ce6186880e

1 files changed, 11 insertions, 0 deletions

diff --git a/src/google_breakpad/processor/stackwalker.h b/src/google_breakpad/processor/stackwalker.h
index c463fd80..90274aae 100644
--- a/src/google_breakpad/processor/stackwalker.h
+++ b/src/google_breakpad/processor/stackwalker.h
@@ -42,6 +42,7 @@
 #define GOOGLE_BREAKPAD_PROCESSOR_STACKWALKER_H__
 
 #include <vector>
+#include "google_breakpad/common/breakpad_types.h"
 
 namespace google_breakpad {
 
@@ -95,6 +96,16 @@ class Stackwalker {
               SymbolSupplier *supplier,
               SourceLineResolverInterface *resolver);
 
+  // This can be used to filter out potential return addresses when
+  // the stack walker resorts to stack scanning.
+  // Returns true if any of:
+  // * This address is within a loaded module, but we don't have symbols
+  //   for that module.
+  // * This address is within a loaded module for which we have symbols,
+  //   and falls inside a function in that module.
+  // Returns false otherwise.
+  bool InstructionAddressSeemsValid(u_int64_t address);
+
   // Information about the system that produced the minidump.  Subclasses
   // and the SymbolSupplier may find this information useful.
   const SystemInfo *system_info_;