Bug 146632 – ASSERTION FAILED: arguments.isObject() in JSC::sizeOfVarargs

• Component: JavaScriptCore
• Status: RESOLVED FIXED

[Renata Hodovan]

Created attachment 256204 [details]
Test case

Load this test with debug jsc:

Array.from.apply(encodeURI,Symbol(17725));


Note: the failure was experienced with an EFL jsc build but it does not seem like a port specific issue.

Backtrace:

ASSERTION FAILED: arguments.isObject()
../../Source/JavaScriptCore/interpreter/Interpreter.cpp(203) : unsigned int JSC::sizeOfVarargs(JSC::CallFrame*, JSC::JSValue, uint32_t)
1   0x7ffff72d46db WTFCrash
2   0x7ffff6f4b6b7 JSC::sizeOfVarargs(JSC::ExecState*, JSC::JSValue, unsigned int)
3   0x7ffff6f4b7a5 JSC::sizeFrameForVarargs(JSC::ExecState*, JSC::JSStack*, JSC::JSValue, unsigned int, unsigned int)
4   0x7ffff7275378
5   0x7ffff727ea46
[New Thread 0x7fffaaffd700 (LWP 13153)]
[New Thread 0x7fffab7fe700 (LWP 13152)]
[New Thread 0x7fffabfff700 (LWP 13151)]
[New Thread 0x7fffb0ffd700 (LWP 13150)]

Program received signal SIGSEGV, Segmentation fault.
0x00007ffff72d46e0 in WTFCrash () at ../../Source/WTF/wtf/Assertions.cpp:321
321     *(int *)(uintptr_t)0xbbadbeef = 0;
(gdb) bt
#0  0x00007ffff72d46e0 in WTFCrash () at ../../Source/WTF/wtf/Assertions.cpp:321
#1  0x00007ffff6f4b6b7 in JSC::sizeOfVarargs (callFrame=0x7fffffffcac0, arguments=..., firstVarArgOffset=0)
    at ../../Source/JavaScriptCore/interpreter/Interpreter.cpp:203
#2  0x00007ffff6f4b7a5 in JSC::sizeFrameForVarargs (callFrame=0x7fffffffcac0, stack=0x7ffff17f6018, arguments=..., numUsedStackSlots=9, firstVarArgOffset=0)
    at ../../Source/JavaScriptCore/interpreter/Interpreter.cpp:221
#3  0x00007ffff7275378 in JSC::LLInt::llint_slow_path_size_frame_for_varargs (exec=0x7fffffffcac0, pc=0x7ffff1017dc8)
    at ../../Source/JavaScriptCore/llint/LLIntSlowPaths.cpp:1202
#4  0x00007ffff727ea46 in llint_entry () from webkit/WebKitBuild/Debug/lib/libjavascriptcore_efl.so.1
#5  0x00007ffff7278cc6 in vmEntryToJavaScript () from webkit/WebKitBuild/Debug/lib/libjavascriptcore_efl.so.1
#6  0x00007ffff6f75702 in JSC::JITCode::execute (this=0x7ffff17e3e70, vm=0x7ffff1004000, protoCallFrame=0x7fffffffccb0)
    at ../../Source/JavaScriptCore/jit/JITCode.cpp:77
#7  0x00007ffff6f4e1e4 in JSC::Interpreter::execute (this=0x7ffff17f6000, program=0x7ffff1046000, callFrame=0x7ffff102b840, thisObj=0x7ffff107acc0)
    at ../../Source/JavaScriptCore/interpreter/Interpreter.cpp:901
#8  0x00007ffff7103f48 in JSC::evaluate (exec=0x7ffff102b840, source=..., thisValue=..., returnedException=...)
    at ../../Source/JavaScriptCore/runtime/Completion.cpp:82
#9  0x0000000000428d38 in runWithScripts (globalObject=0x7ffff102b800, scripts=..., dump=false) at ../../Source/JavaScriptCore/jsc.cpp:1315
#10 0x0000000000429c41 in jscmain (argc=2, argv=0x7fffffffd8f8) at ../../Source/JavaScriptCore/jsc.cpp:1533
#11 0x0000000000428b0a in main (argc=2, argv=0x7fffffffd8f8) at ../../Source/JavaScriptCore/jsc.cpp:1273

[Brent Fulgham]

This does not reproduce under r204037, due to changes in the JavaScript implementation. If you believe there is still a problem, please reopen this bug with a revised test case.