[#IDEADEV-11033] false positive in "Constant conditions & Exceptions"

IDEA: Development

false positive in "Constant conditions & Exceptions"

Created: 14 Jul 05 16:46 Updated: 06 Nov 08 23:29

Component/s:

Code Analysis. Inspection

Fix Version/s:

Undefined

Original Estimate:	Unknown	Remaining Estimate:	Unknown	Time Spent:	Unknown
Environment:	Windows XP

Build:	3,405
Severity:	Medium

Description

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In the following code "Constant conditions & Exceptions" marks the condition as always true:

public class NonconstantCondition {
	static boolean flag = false;

	public static void test() {
		if (flag == (flag = true)) {
			System.out.println("condition is false");
		} else {
			System.out.println("condition is true");
		}
	}

	public static void main(String[] args) {
		test();
		test();
	}
}

Running it produces the following output show that the condition is indeed false once:

condition is true
condition is false

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Stephen Friedrich - 05 Sep 06 19:33

Looks like a duplicate of IDEABKL-2810

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Vladislav Kaznacheev - 19 Oct 06 19:16

reproduces in 6052