Mercurial > hg > graal-jvmci-8
comparison src/share/vm/opto/graphKit.cpp @ 955:26fbe81d30cf
6880052: SIGSEGV in GraphKit::null_check_common()
Summary: Check that a klass is not NULL before the is_loaded() call.
Reviewed-by: never
author | kvn |
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date | Tue, 08 Sep 2009 16:56:31 -0700 |
parents | 0f1c19b7a52d |
children | 685e959d09ea |
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954:0f1c19b7a52d | 955:26fbe81d30cf |
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1124 type = T_OBJECT; // simplify further tests | 1124 type = T_OBJECT; // simplify further tests |
1125 case T_OBJECT : { | 1125 case T_OBJECT : { |
1126 const Type *t = _gvn.type( value ); | 1126 const Type *t = _gvn.type( value ); |
1127 | 1127 |
1128 const TypeOopPtr* tp = t->isa_oopptr(); | 1128 const TypeOopPtr* tp = t->isa_oopptr(); |
1129 if (tp != NULL && !tp->klass()->is_loaded() | 1129 if (tp != NULL && tp->klass() != NULL && !tp->klass()->is_loaded() |
1130 // Only for do_null_check, not any of its siblings: | 1130 // Only for do_null_check, not any of its siblings: |
1131 && !assert_null && null_control == NULL) { | 1131 && !assert_null && null_control == NULL) { |
1132 // Usually, any field access or invocation on an unloaded oop type | 1132 // Usually, any field access or invocation on an unloaded oop type |
1133 // will simply fail to link, since the statically linked class is | 1133 // will simply fail to link, since the statically linked class is |
1134 // likely also to be unloaded. However, in -Xcomp mode, sometimes | 1134 // likely also to be unloaded. However, in -Xcomp mode, sometimes |