[ escjava-Bugs-577 ] Modifies warning disappears

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Reply to: noreply@sort.ucd.ie }}} {{{ Bugs item #577, was opened at 2007-06-14 13:42 You can respond by visiting: http://sort.ucd.ie/tracker/?func=detail&atid=441&aid=577&group_id=97

Category: None Group: 2.0b0 Status: Open Resolution: None Priority: 3 Submitted By: Aleksy Schubert (alx-gforge) Assigned to: Nobody (None) Summary: Modifies warning disappears

Initial Comment: An ESC/Java2 check for Maina.java:

import java.util.LinkedList; /@ pure @/ class Maina { private int b; private LinkedList l = new LinkedList(); Maina() { } public int length() { if (l==null) return 0; l.clear(); return l.size(); } }

gives a proper warning:

Maina: length() ...

Maina.java:25: Warning: Possible violation of modifies clause (Modifies) l.clear(); ^ Associated declaration is "/home/alx/bug/../esc/specs/java/util/Collection.spec", line 303, col 21: @ assignable objectState; ^ Associated declaration is "Maina.java", line 19, col 2: public int length() { ... ^ Execution trace information: Executed else branch in "Maina.java", line 21, col 4.

while adding some random code such as in Main.java:

import java.util.LinkedList; /@ pure @/ class Main { private int b; private LinkedList l = new LinkedList(); Main() { } public int length() { int x = 10; int y = 10; int aa[] = new int[10]; for (int i=0;i<x;i++) { y += i; aa[i] = y; } l.clear(); return aa.length * y + x + b + l.size(); } } causes the warning to disappear.

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You can respond by visiting: http://sort.ucd.ie/tracker/?func=detail&atid=441&aid=577&group_id=97 }}}

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Milestone ESCJava2 2.0.9 release deleted

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From: kiniry (GH: kiniry) Date: Wed Oct 21 12:20:05 2009

Duplicate of #116.

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From: kiniry (GH: kiniry) Date: Wed Oct 21 12:20:13 2009

Duplicate of #116.