jdanekrh commented on a change in pull request #2650: ARTEMIS-2320 Multiple
math-related fixes
URL: https://github.com/apache/activemq-artemis/pull/2650#discussion_r279201353
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File path:
artemis-journal/src/main/java/org/apache/activemq/artemis/core/io/mapped/MappedSequentialFile.java
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@@ -110,7 +110,7 @@ public void open(int maxIO, boolean useExecutor) throws
IOException {
@Override
public boolean fits(int size) {
checkIsOpen();
- final long newPosition = this.mappedFile.position() + size;
+ final long newPosition = (long) this.mappedFile.position() + size;
final boolean hasRemaining = newPosition <= this.mappedFile.length();
Review comment:
It may change semantics, depending on how large the variables are. You are
adding together two ints, then assigning to long. Without the cast, you can get
overflow on the int range, before you assign to that long. (Which is what the
IntLongMath warning is about).
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