[Webkit-unassigned] [Bug 268798] New: Crash in TIntermAggregate::getConstantValue() when mArguments is an empty std::vector

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=268798

            Bug ID: 268798
           Summary: Crash in TIntermAggregate::getConstantValue() when
                    mArguments is an empty std::vector
           Product: WebKit
           Version: Other
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Keywords: InRadar
          Severity: Normal
          Priority: P2
         Component: ANGLE
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: ddkilzer at webkit.org
                CC: dino at apple.com, kbr at google.com, kkinnunen at apple.com

Crash in TIntermAggregate::getConstantValue() when mArguments is an empty std::vector.

The `TIntermAggregate::getConstantValue()` method can be called when `mArguments` is an empty `std::vector`.

There is a Debug assertion to catch this, but on Release builds, calling `std::vector::front()` on an empty vector results in a libc++ assertion.

<rdar://122237051>

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