Mercurial > hg > graal-jvmci-8
diff src/share/vm/classfile/verifier.cpp @ 23938:09fbe9c45409
8155981: Bolster bytecode verification
Reviewed-by: acorn, jdn
Contributed-by: harold.seigel@oracle.com
author | shshahma |
---|---|
date | Wed, 11 May 2016 12:03:46 -0400 |
parents | 6b65121b3258 |
children | e4525db27263 |
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--- a/src/share/vm/classfile/verifier.cpp Mon May 16 14:26:26 2016 -0700 +++ b/src/share/vm/classfile/verifier.cpp Wed May 11 12:03:46 2016 -0400 @@ -2323,9 +2323,17 @@ case Bytecodes::_ifnonnull: target = bcs.dest(); if (visited_branches->contains(bci)) { - if (bci_stack->is_empty()) return true; - // Pop a bytecode starting offset and scan from there. - bcs.set_start(bci_stack->pop()); + if (bci_stack->is_empty()) { + if (handler_stack->is_empty()) { + return true; + } else { + // Parse the catch handlers for try blocks containing athrow. + bcs.set_start(handler_stack->pop()); + } + } else { + // Pop a bytecode starting offset and scan from there. + bcs.set_start(bci_stack->pop()); + } } else { if (target > bci) { // forward branch if (target >= code_length) return false; @@ -2348,9 +2356,17 @@ case Bytecodes::_goto_w: target = (opcode == Bytecodes::_goto ? bcs.dest() : bcs.dest_w()); if (visited_branches->contains(bci)) { - if (bci_stack->is_empty()) return true; - // Been here before, pop new starting offset from stack. - bcs.set_start(bci_stack->pop()); + if (bci_stack->is_empty()) { + if (handler_stack->is_empty()) { + return true; + } else { + // Parse the catch handlers for try blocks containing athrow. + bcs.set_start(handler_stack->pop()); + } + } else { + // Been here before, pop new starting offset from stack. + bcs.set_start(bci_stack->pop()); + } } else { if (target >= code_length) return false; // Continue scanning from the target onward.