MYFACES-4760 QuarkusApplication.getELResolver() introduces data race - #1042
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QuarkusApplication.getELResolver() first sets (and exposes) the instance variable
and only then calls the resolver builder. The builder is not thread-safe. Thus
concurrent requests can access an empty slot in the builder's internal array.
Now using Lazy just as ApplicationImpl does.
Fixes:
jakarta.el.ELException: java.lang.NullPointerException: Cannot invoke
"jakarta.el.ELResolver.convertToType(...)" because "this.elResolvers[i]" is null
at jakarta.el.ELContext.convertToType(ELContext.java:435)
at org.glassfish.expressly.lang.EvaluationContext.convertToType(EvaluationContext.java:141)
at org.glassfish.expressly.ValueExpressionImpl.getValue(ValueExpressionImpl.java:142)
at org.apache.myfaces.application.ApplicationImpl.evaluateExpressionGet(ApplicationImpl.java:515)
...
Caused by: java.lang.NullPointerException: ... "this.elResolvers[i]" is null
at jakarta.el.CompositeELResolver.convertToType(CompositeELResolver.java:446)
melloware
approved these changes
Aug 12, 2026
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QuarkusApplication.getELResolver() first sets (and exposes) the instance variable and only then calls the resolver builder. The builder is not thread-safe. Thus concurrent requests can access an empty slot in the builder's internal array.
Now using Lazy just as ApplicationImpl does.
Fixes:
jakarta.el.ELException: java.lang.NullPointerException: Cannot invoke
"jakarta.el.ELResolver.convertToType(...)" because "this.elResolvers[i]" is null
at jakarta.el.ELContext.convertToType(ELContext.java:435)
at org.glassfish.expressly.lang.EvaluationContext.convertToType(EvaluationContext.java:141)
at org.glassfish.expressly.ValueExpressionImpl.getValue(ValueExpressionImpl.java:142)
at org.apache.myfaces.application.ApplicationImpl.evaluateExpressionGet(ApplicationImpl.java:515)
...
Caused by: java.lang.NullPointerException: ... "this.elResolvers[i]" is null
at jakarta.el.CompositeELResolver.convertToType(CompositeELResolver.java:446)