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https://issues.apache.org/jira/browse/GROOVY-12691?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Paul King resolved GROOVY-12691.
--------------------------------
Fix Version/s: 7.0.0-alpha-1
6.0.1
Assignee: Paul King
Resolution: Fixed
> Static type checking silently drops some errors that are at distinct source
> positions
> -------------------------------------------------------------------------------------
>
> Key: GROOVY-12691
> URL: https://issues.apache.org/jira/browse/GROOVY-12691
> Project: Groovy
> Issue Type: Bug
> Affects Versions: 6.0.0
> Reporter: Scott Murphy Heiberg
> Assignee: Paul King
> Priority: Major
> Fix For: 7.0.0-alpha-1, 6.0.1
>
>
> Under {{@TypeChecked}} or {{@CompileStatic}}, a type checking error is
> silently dropped when an earlier error was reported at certain other
> positions. Four undefined method calls that start in column 47 give only two
> errors.
> {{Col47.groovy}} (each call is preceded by 46 spaces, so it starts in column
> 47):
> {code:groovy}
> @groovy.transform.TypeChecked
> void m() {
> missing1()
> missing2()
> missing3()
> missing4()
> }
> {code}
> {code:sh}
> groovyc Col47.groovy
> {code}
> Actual: exit 1 with two errors.
> {noformat}
> org.codehaus.groovy.control.MultipleCompilationErrorsException: startup
> failed:
> Col47.groovy: 3: [Static type checking] - Cannot find matching method
> Col47#missing1(). Please check if the declared type is correct and if the
> method exists.
> @ line 3, column 47.
> missing1()
> ^
> Col47.groovy: 4: [Static type checking] - Cannot find matching method
> Col47#missing2(). Please check if the declared type is correct and if the
> method exists.
> @ line 4, column 47.
> missing2()
> ^
> 2 errors
> {noformat}
> Expected: four errors, one for each call. When the same four calls start in
> column 5, all four are reported.
> The number of errors that survive depends on the column. With 32 undefined
> calls, one per line, all starting in the same column:
> ||column||errors reported||
> |5, 20, 32, 40|32 of 32|
> |44|16 of 32|
> |45|8 of 32|
> |46|4 of 32|
> |47|2 of 32|
> |48, 60, 65|32 of 32|
> Long lines are not needed. Each of these pairs of calls also gives only the
> first error:
> * two calls on the same line 64 columns apart, for example columns 5 and 69
> of line 3;
> * a call at line 3, column 9 and a call at line 6, column 8 (in general, line
> L column c and line 2L column c - 1).
> The warning "The field: ... is hidden by a dynamic property" (GROOVY-11360)
> is dropped in the same way: in a class with {{private static final value}}, a
> reference to {{value}} inside {{d.with \{ ... \}}} at line 7, column 47 gets
> no warning when an unrelated error was reported at line 5, column 47. It gets
> the warning when that error is at column 5.
> Affected versions: 6.0.0, 6.0.0-beta-1, 5.0.8 and 5.0.0 give the counts
> above, and so does current master (7.0.0-SNAPSHOT at 5e9212ce1e). The same
> expression is in {{StaticTypeCheckingVisitor}} on {{GROOVY_2_5_X}},
> {{GROOVY_3_0_X}} and {{GROOVY_4_0_X}}; those were not run.
> Cause: {{StaticTypeCheckingVisitor.addError}} skips an error whose key is
> already in {{TypeCheckingContext.reportedErrors}}, and builds the key as
> {{((long) node.getLineNumber()) << 16 + node.getColumnNumber()}}. Because
> {{+}} binds tighter than {{<<}}, that is {{line << (16 + column)}}, and a
> shift of a {{long}} uses only the low six bits of the distance. So up to
> column 47 the key keeps only the low 48 - column bits of the line number, two
> columns 64 apart on one line give the same key, and line L at column c gives
> the same key as line 2L at column c - 1. The check for the hidden-field
> warning in {{visitVariableExpression}} builds the key the same way.
> Fix outline: build the key as {{(((long) line) << 32) + column}}, so that
> each line and column pair has its own key; {{(line << 16) + column}} would
> still let column c + 65536 of one line collide with column c of the next.
> A pull request with regression tests follows.
> Environment: Groovy 6.0.0 on BellSoft JDK 21.0.12, macOS 26.5 (arm64);
> reproduced on master at 5e9212ce1e with the same JDK.
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