test/mjsunit/regress/regress-1117.js

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// Flags: --allow-natives-syntax

// Test that we actually return the right value (-0) when we multiply
// constant 0 with a negative integer.

function foo(y) {return 0 * y; }
assertEquals(1/foo(-42), -Infinity);
assertEquals(1/foo(-42), -Infinity);
%OptimizeFunctionOnNextCall(foo);
assertEquals(1/foo(-42), -Infinity);

function bar(x) { return x * 0; }
assertEquals(Infinity, 1/bar(5));
assertEquals(Infinity, 1/bar(5));
%OptimizeFunctionOnNextCall(bar);
assertEquals(-Infinity, 1/bar(-5));