ASSERT((!jsvGetNextSibling(var) && !jsvGetPrevSibling(var)) || jsvIsRefUsedForData(var) || (jsvIsName(var) && (jsvGetNextSibling(var)==jsvGetPrevSibling(var))))

[Limesss]

Reproduce:
make Debug=1

POC:

this.print = console.log;
function print(s) {};

details:
ASSERT((!jsvGetNextSibling(var) && !jsvGetPrevSibling(var)) || jsvIsRefUsedForData(var) || (jsvIsName(var) && (jsvGetNextSibling(var)==jsvGetPrevSibling(var)))) FAILED AT src/jsvar.c:656
#1[r0,l1] Object { }
EXITING.