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8073315: Enable gcc -Wtype-limits and fix upcoming issues

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Relevant fixes in blockOffsetTable.cpp, os_linux.cpp, parCardTableModRefBS.cpp.

Reviewed-by: jwilhelm, kbarrett, simonis
This commit is contained in:
Goetz Lindenmaier 2015-02-16 14:07:36 +01:00
parent 2632925f9f
commit a7edf52a02
28 changed files with 71 additions and 86 deletions
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7
hotspot/src/share/vm/opto/graphKit.cpp
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@ -3027,12 +3027,7 @@ Node* GraphKit::gen_checkcast(Node *obj, Node* superklass,
// We may not have profiling here or it may not help us. If we have
// a speculative type use it to perform an exact cast.
ciKlass* spec_obj_type = obj_type->speculative_type();
if (spec_obj_type != NULL ||
(data != NULL &&
// Counter has never been decremented (due to cast failure).
// ...This is a reasonable thing to expect. It is true of
// all casts inserted by javac to implement generic types.
data->as_CounterData()->count() >= 0)) {
if (spec_obj_type != NULL || data != NULL) {
cast_obj = maybe_cast_profiled_receiver(not_null_obj, tk->klass(), spec_obj_type, safe_for_replace);
if (cast_obj != NULL) {
if (failure_control != NULL) // failure is now impossible