diff -r bcd72ab4d91f -r d14a18794c90 src/share/vm/classfile/stackMapTable.cpp --- a/src/share/vm/classfile/stackMapTable.cpp Thu Jan 16 13:25:25 2014 -0800 +++ b/src/share/vm/classfile/stackMapTable.cpp Sat Aug 02 16:28:59 2014 -0400 @@ -70,24 +70,26 @@ bool StackMapTable::match_stackmap( StackMapFrame* frame, int32_t target, - bool match, bool update, ErrorContext* ctx, TRAPS) const { + bool match, bool update, bool handler, ErrorContext* ctx, TRAPS) const { int index = get_index_from_offset(target); - return match_stackmap(frame, target, index, match, update, ctx, THREAD); + return match_stackmap(frame, target, index, match, update, handler, ctx, THREAD); } // Match and/or update current_frame to the frame in stackmap table with // specified offset and frame index. Return true if the two frames match. +// handler is true if the frame in stackmap_table is for an exception handler. // -// The values of match and update are: _match__update_ +// The values of match and update are: _match__update__handler // -// checking a branch target/exception handler: true false +// checking a branch target: true false false +// checking an exception handler: true false true // linear bytecode verification following an -// unconditional branch: false true +// unconditional branch: false true false // linear bytecode verification not following an -// unconditional branch: true true +// unconditional branch: true true false bool StackMapTable::match_stackmap( StackMapFrame* frame, int32_t target, int32_t frame_index, - bool match, bool update, ErrorContext* ctx, TRAPS) const { + bool match, bool update, bool handler, ErrorContext* ctx, TRAPS) const { if (frame_index < 0 || frame_index >= _frame_count) { *ctx = ErrorContext::missing_stackmap(frame->offset()); frame->verifier()->verify_error( @@ -98,11 +100,9 @@ StackMapFrame *stackmap_frame = _frame_array[frame_index]; bool result = true; if (match) { - // when checking handler target, match == true && update == false - bool is_exception_handler = !update; // Has direct control flow from last instruction, need to match the two // frames. - result = frame->is_assignable_to(stackmap_frame, is_exception_handler, + result = frame->is_assignable_to(stackmap_frame, handler, ctx, CHECK_VERIFY_(frame->verifier(), result)); } if (update) { @@ -126,7 +126,7 @@ StackMapFrame* frame, int32_t target, TRAPS) const { ErrorContext ctx; bool match = match_stackmap( - frame, target, true, false, &ctx, CHECK_VERIFY(frame->verifier())); + frame, target, true, false, false, &ctx, CHECK_VERIFY(frame->verifier())); if (!match || (target < 0 || target >= _code_length)) { frame->verifier()->verify_error(ctx, "Inconsistent stackmap frames at branch target %d", target); @@ -134,7 +134,6 @@ } // check if uninitialized objects exist on backward branches check_new_object(frame, target, CHECK_VERIFY(frame->verifier())); - frame->verifier()->update_furthest_jump(target); } void StackMapTable::check_new_object(