View Incident Report

Serious

Reported By: ooptimum
Reported On: 10/16/2018
For: Version 2.06 Build 18

# 4689 Using Non-Idempotent Function Calls in Case Statements Can Cause Incorrect Results

Wrong JS code generation of case statement if case expression is a function call.

The compiler generates:

if (random(0, 2) == 0)
s = "zero";
else if (random(0, 2) == 1)
s = "one";
else if (random(0, 2) == 2)
s = "two";

while it should be:

var temp$ = random(0, 2);
if (temp$ == 0)
s = "zero";
else if (temp$ == 1)
s = "one";
else if (temp$ == 2)
s = "two";

for the code below.

var
  s: string;
begin
  case Random(0, 2) of
    0: s := 'zero';
    1: s := 'one';
    2: s := 'two';
  end;
  // 's' could be empty here

Resolution

Fixed Problem on 10/28/2018 in version 2.06 build 19

Products Affected

Elevate Web Builder
Elevate Web Builder Trial

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