Details
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Enhancement
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Resolution: Fixed
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P4
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11, 13, 15
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b16
Description
ADDITIONAL SYSTEM INFORMATION :
openjdk version "13" 2019-09-17
OpenJDK Runtime Environment (build 13+33-Ubuntu-1)
A DESCRIPTION OF THE PROBLEM :
Normally, when a computation with a long and a double variable is performed then javac produces an incompatible types error as illustrate in the following example:
long a = 1L + 0.1 * 3L; // produces error: incompatible types: possible lossy conversion from double to long
However, when the same computation is done with an "+=" operator (or also with similar operators, like "-="), then this error does not occur:
long b = 1L;
b += 0.1 * 3L;
Since this error is helpful to detect unwanted usages of variables or etc., it would be good to show it in all situations, where it can occur.
FREQUENCY : always
openjdk version "13" 2019-09-17
OpenJDK Runtime Environment (build 13+33-Ubuntu-1)
A DESCRIPTION OF THE PROBLEM :
Normally, when a computation with a long and a double variable is performed then javac produces an incompatible types error as illustrate in the following example:
long a = 1L + 0.1 * 3L; // produces error: incompatible types: possible lossy conversion from double to long
However, when the same computation is done with an "+=" operator (or also with similar operators, like "-="), then this error does not occur:
long b = 1L;
b += 0.1 * 3L;
Since this error is helpful to detect unwanted usages of variables or etc., it would be good to show it in all situations, where it can occur.
FREQUENCY : always
Attachments
Issue Links
- csr for
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JDK-8286377 Add javac lint warning for possibly lossy conversion in compound assignments
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- Closed
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- relates to
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JDK-8286378 Address possibly lossy conversions in java.base
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- Resolved
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JDK-8300591 @SuppressWarnings option "lossy-conversions" missing from jdk.compiler module javadoc
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- Resolved
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- Open
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(1 links to)