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Bug
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Resolution: Fixed
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P4
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None
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b57
| Issue | Fix Version | Assignee | Priority | Status | Resolution | Resolved In Build |
|---|---|---|---|---|---|---|
| JDK-8082510 | emb-9 | Goetz Lindenmaier | P4 | Resolved | Fixed | team |
This warning detects unnecessary compares for >= 0 of unsigned values.
At least one warning unveils a real bug. In memory/blockOffsetTable.cpp, BlockOffsetArrayContigSpace::last_active_index(), the compare to >=0 tries to prevent an underflow, but the value is unsigned.
Further useless compares in real code are in os_linux.cpp, opto/graphKit.cpp and prims/jvmtiRedefineClasses.cpp.
In some places debug code with constant debug flags caused warnings in the opt build (g1/concurrentMark.cpp, classfile/systemDictionary.cpp) .
Most of the warnings occur in asserts.
The change also removes an empty #ifdef ASSERT.
At least one warning unveils a real bug. In memory/blockOffsetTable.cpp, BlockOffsetArrayContigSpace::last_active_index(), the compare to >=0 tries to prevent an underflow, but the value is unsigned.
Further useless compares in real code are in os_linux.cpp, opto/graphKit.cpp and prims/jvmtiRedefineClasses.cpp.
In some places debug code with constant debug flags caused warnings in the opt build (g1/concurrentMark.cpp, classfile/systemDictionary.cpp) .
Most of the warnings occur in asserts.
The change also removes an empty #ifdef ASSERT.
- backported by
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JDK-8082510 Enable gcc -Wtype-limits and fix upcoming issues.
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- Resolved
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- blocks
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- Closed
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JDK-8074142 Simplify use of G1StressConcRegionFreeingDelayMillis
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- Closed
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- relates to
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- Resolved
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