https://issues.apache.org/bugzilla/show_bug.cgi?id=49985
Summary: Lazy initialization without any synchronization - data
race in AstInteger, AstFloatingPoint, AstString
Product: Tomcat 6
Version: 6.0.29
Platform: PC
Status: NEW
Severity: normal
Priority: P2
Component: Catalina
AssignedTo: dev@tomcat.apache.org
ReportedBy: sergeyvorob...@google.com
r998053
http://svn.apache.org/repos/asf/tomcat/tc6.0.x/trunk/java/org/apache/el/parser/AstInteger.java
http://svn.apache.org/repos/asf/tomcat/tc6.0.x/trunk/java/org/apache/el/parser/AstFloatingPoint.java
http://svn.apache.org/repos/asf/tomcat/tc6.0.x/trunk/java/org/apache/el/parser/AstString.java
Use lazy init without any synchronization in methods getInteger(),
getFloatingPoint(), getString(), respectively.
Consider AstInteger:
private Number number;
protected Number getInteger() {
if (this.number == null) {
try {
this.number = new Long(this.image);
} catch (ArithmeticException e1) {
this.number = new BigInteger(this.image);
}
}
return number;
}
Data races on variable number :37
in method getInteger() :39
concurrent read on line 40
concurrent write on lines 42, 44
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