Using the changes in the patch you provided, I made progress but I have some
observations to report:
I didn’t find the changes in ConsoleClient.cpp to be necessary, actually with
my version of webkit they didn’t build as is, I removed them. I think that the
change to CSSPrimitiveValue.h is actually the part I was missing to fix the
linking error.
When attempting to run with my test application I’m finding that most websites,
facebook.com for example, are crashing in LowLevelInterpreterWin.asm code
identified by LowLevelInterpreter.asm:476:
_offlineasm_doCall__177_loadConstantOrVariable__done:
cmp rbx, rcx ;
..\..\JavaScriptCore\local\JavaScriptCore\llint/LowLevelInterpreter64.asm:1798
jne _offlineasm_doCall__opCallSlow
movsxd rbx, dword ptr [32 + r8 + rsi * 8] ;
..\..\JavaScriptCore\local\JavaScriptCore\llint\LowLevelInterpreter.asm:114
sal ebx, 3 ;
..\..\JavaScriptCore\local\JavaScriptCore\llint/LowLevelInterpreter64.asm:1800
neg rbx ;
..\..\JavaScriptCore\local\JavaScriptCore\llint/LowLevelInterpreter64.asm:1801
add rbx, rbp ;
..\..\JavaScriptCore\local\JavaScriptCore\llint/LowLevelInterpreter64.asm:1802
mov qword ptr [24 + rbx], rcx ;
..\..\JavaScriptCore\local\JavaScriptCore\llint/LowLevelInterpreter64.asm:1803
movsxd rcx, dword ptr [24 + r8 + rsi * 8] ;
..\..\JavaScriptCore\local\JavaScriptCore\llint\LowLevelInterpreter.asm:114
mov dword ptr [36 + rbp], esi ;
..\..\JavaScriptCore\local\JavaScriptCore\llint/LowLevelInterpreter64.asm:1805
mov dword ptr [32 + rbx], ecx ;
..\..\JavaScriptCore\local\JavaScriptCore\llint/LowLevelInterpreter64.asm:1806
add rbx, 16 ;
..\..\JavaScriptCore\local\JavaScriptCore\llint/LowLevelInterpreter64.asm:1807
mov rsp, rbx ;
..\..\JavaScriptCore\local\JavaScriptCore\llint\LowLevelInterpreter.asm:472
call qword ptr [32 + rdx] ;
..\..\JavaScriptCore\local\JavaScriptCore\llint\LowLevelInterpreter.asm:476
mov rcx, qword ptr [16 + rbp] ;
..\..\JavaScriptCore\local\JavaScriptCore\llint\LowLevelInterpreter.asm:461
mov edi, dword ptr [56 + rcx] ;
..\..\JavaScriptCore\local\JavaScriptCore\llint\LowLevelInterpreter.asm:449
sal rdi, 3 ;
..\..\JavaScriptCore\local\JavaScriptCore\llint\LowLevelInterpreter.asm:450
add rdi, 64 ;
..\..\JavaScriptCore\local\JavaScriptCore\llint\LowLevelInterpreter.asm:451
mov rsp, rbp ;
..\..\JavaScriptCore\local\JavaScriptCore\llint\LowLevelInterpreter.asm:456
sub rsp, rdi
mov esi, dword ptr [36 + rbp] ;
..\..\JavaScriptCore\local\JavaScriptCore\llint/LowLevelInterpreter64.asm:45
mov r8, qword ptr [16 + rbp] ;
..\..\JavaScriptCore\local\JavaScriptCore\llint/LowLevelInterpreter64.asm:46
mov r8, qword ptr [104 + r8] ;
..\..\JavaScriptCore\local\JavaScriptCore\llint/LowLevelInterpreter64.asm:47
movsxd rdx, dword ptr [8 + r8 + rsi * 8] ;
..\..\JavaScriptCore\local\JavaScriptCore\llint\LowLevelInterpreter.asm:114
mov qword ptr [0 + rbp + rdx * 8], rax ;
..\..\JavaScriptCore\local\JavaScriptCore\llint/LowLevelInterpreter64.asm:49
mov rcx, qword ptr [64 + r8 + rsi * 8] ;
..\..\JavaScriptCore\local\JavaScriptCore\llint\LowLevelInterpreter.asm:118
mov qword ptr [16 + rcx], rax ;
..\..\JavaScriptCore\local\JavaScriptCore\llint/LowLevelInterpreter64.asm:491
add rsi, 9 ;
..\..\JavaScriptCore\local\JavaScriptCore\llint/LowLevelInterpreter64.asm:31
jmp qword ptr [0 + r8 + rsi * 8] ;
..\..\JavaScriptCore\local\JavaScriptCore\llint/LowLevelInterpreter64.asm:27
I tried regenerating the asm files but still have the issue. I expect that
some updates need to be done to the asm generator for vs2015. Have you found
this issue too? Or have any suggestion on how to correct the crash?
Chris
From: Vienneau, Christopher
Sent: Friday, July 10, 2015 4:36 PM
To: 'Brent Fulgham'
Cc: Webkit Development List
Subject: RE: [webkit-dev] Compilation issue with VS2015RC
A brief look at your patch shows similar changes that I have done, I’ll
investigate the additional changes which seem to relate to the linker error.
I’ll keep my eye on this bug now.
Many Thanks
From: Brent Fulgham [mailto:[email protected]]
Sent: Friday, July 10, 2015 4:30 PM
To: Vienneau, Christopher
Cc: Webkit Development List
Subject: Re: [webkit-dev] Compilation issue with VS2015RC
Hi Chris,
We noticed the same thing. Please see
<https://bugs.webkit.org/show_bug.cgi?id=146579>, where we are discussing how
to move forward.
Thanks!
-Brent
On Jul 10, 2015, at 4:05 PM, Vienneau, Christopher
<[email protected]<mailto:[email protected]>> wrote:
Hello,
Recently we’ve been attempting to move our code base to build with VS2015 RC
since this provides us with some support that we’ll be needing in the future
for our products. The changes for compilation with the new compiler haven’t
been too bad, and I have everything building with the exception of one line:
FILE: JSCSSValueCustom.cpp
Line95:
67 JSValue toJS(ExecState*, JSDOMGlobalObject* globalObject,
CSSValue* value)
68 {
69 if (!value)
70 return jsNull();
71
72 // Scripts should only ever see cloned CSSValues, never the
internal ones.
73 ASSERT(value->isCSSOMSafe());
74
75 // If we're here under erroneous circumstances, prefer
returning null over a potentially insecure value.
76 if (!value->isCSSOMSafe())
77 return jsNull();
78
79 JSObject* wrapper = getCachedWrapper(globalObject->world(),
value);
80
81 if (wrapper)
82 return wrapper;
83
84 if (value->isWebKitCSSTransformValue())
85 wrapper = CREATE_DOM_WRAPPER(globalObject,
WebKitCSSTransformValue, value);
86 else if (value->isWebKitCSSFilterValue())
87 wrapper = CREATE_DOM_WRAPPER(globalObject,
WebKitCSSFilterValue, value);
88 else if (value->isValueList())
89 wrapper = CREATE_DOM_WRAPPER(globalObject, CSSValueList,
value);
90 else if (value->isSVGPaint())
91 wrapper = CREATE_DOM_WRAPPER(globalObject, SVGPaint,
value);
92 else if (value->isSVGColor())
93 wrapper = CREATE_DOM_WRAPPER(globalObject, SVGColor,
value);
94 else if (value->isPrimitiveValue())
95 wrapper = CREATE_DOM_WRAPPER(globalObject,
CSSPrimitiveValue, value);
96 else
97 wrapper = CREATE_DOM_WRAPPER(globalObject, CSSValue,
value);
98
99 return wrapper;
100 }
It produces the linker error:
JSBindingsAllInOne.obj : error LNK2019: unresolved external symbol "public:
__thiscall WebCore::CSSPrimitiveValue::operator<class WTF::Ref<class
WebCore::CSSPrimitiveValue> > class WTF::Ref<class
WebCore::CSSPrimitiveValue>(void)const "
(??$?BV?$Ref@VCSSPrimitiveValue@WebCore@@@WTF@@@CSSPrimitiveValue@WebCore@@QBE?AV?$Ref@VCSSPrimitiveValue@WebCore@@@WTF@@XZ)
referenced in function "class WebCore::JSDOMWrapper * __cdecl
WebCore::createWrapper<class WebCore::JSCSSPrimitiveValue,class
WebCore::CSSPrimitiveValue>(class WebCore::JSDOMGlobalObject *,class
WebCore::CSSPrimitiveValue *)"
(??$createWrapper@VJSCSSPrimitiveValue@WebCore@@VCSSPrimitiveValue@2@@WebCore@@YAPAVJSDOMWrapper@0@PAVJSDOMGlobalObject@0@PAVCSSPrimitiveValue@0@@Z)
As you can see there are many other similar code lines in the area, none of
which cause a problem. Despite my many attempts I can’t seem to satisfy the
linker by providing it the definition it needs.
• I’ve attempted manually adding the copy constructor definition (I
believe that is what it is describing):
o CSSPrimitiveValue::CSSPrimitiveValue(ClassType classType, const
CSSPrimitiveValue& cloneFrom)
o CSSPrimitiveValue::CSSPrimitiveValue(const CSSPrimitiveValue& cloneFrom)
• I’ve tried removing the usage of the “AllInOne” file, thinking that
it may be causing some issue.
• I’ve attempted to debug the code when the offending line is commented
out, hoping to see better how the other lines function. Though I’m not sure
what path would cause it to execute, I haven’t hit it in my limited testing.
• One of my colleagues reached out the MS on the issue, but it behaves
as expect on their end (small sample code does not find a bug in the compiler).
https://social.msdn.microsoft.com/Forums/en-US/6b9787f3-62bd-473a-8aa1-5f6cd85ed87b/breaking-change-in-visual-studio-2015-rc?forum=vcgeneral
Any suggestions would be much appreciated
Thanks
Chris
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