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6841800: Incorrect boundary values behavior for option -XX:MaxLabelRootDepth=0-6 leads to jvm crash

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MaxLabelRootDepth value less then 10 is invalid.

Reviewed-by: never
This commit is contained in:
Vladimir Kozlov 2009-06-24 12:00:51 -07:00
parent 26949087c0
commit 8f6070ce0e
1 changed files with 4 additions and 0 deletions
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4
hotspot/src/share/vm/opto/matcher.cpp
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@ -141,6 +141,10 @@ void Matcher::verify_new_nodes_only(Node* xroot) {
//---------------------------match--------------------------------------------- //---------------------------match---------------------------------------------
void Matcher::match( ) { void Matcher::match( ) {
if( MaxLabelRootDepth < 100 ) { // Too small?
assert(false, "invalid MaxLabelRootDepth, increase it to 100 minimum");
MaxLabelRootDepth = 100;
}
// One-time initialization of some register masks. // One-time initialization of some register masks.
init_spill_mask( C->root()->in(1) ); init_spill_mask( C->root()->in(1) );
_return_addr_mask = return_addr(); _return_addr_mask = return_addr();