[MinGW-notify] [ mingw-Bugs-3439065 ] method incorrectly identified

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Bugs item #3439065, was opened at 2011-11-16 14:39
Message generated for change (Settings changed) made by earnie
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Category: gcc
>Group: Known Feature
>Status: Closed
>Resolution: Wont Fix
Priority: 5
Private: No
Submitted By: https://www.google.com/accounts ()
Assigned to: Nobody/Anonymous (nobody)
Summary: method incorrectly identified

Initial Comment:
I am trying to compile some stripped down Scintilla component, but i get the error:

sciedit.o:sciedit.cxx:(.text$_ZN16TScintillaEditor6searchEPKct+0x84): undefined reference to `Document::FindTextA(int, int, char const*, bool, bool, bool, bool, int, int*, CaseFolder*)'

but I have no FindTextA method defined in the Document class, only FindText instead; I think it's because the method is mistook for the Windows function FindText, and renamed accordingly when referenced.

This is the compile/link command: 
g++ -shared -Wl,--enable-runtime-pseudo-reloc-v2 -mno-cygwin -mwindows --relocatable -o ../bin/Scintilla.dll -s sciedit.o CellBuffer.o CharacterSet.o CharClassify.o ContractionState.o Decoration.o Document.o KeyMap.o PerLine.o PropSetSimple.o RESearch.o RunStyles.o ScintRes.o PlatTV.o Selection.o UniConversion.o  -DNDEBUG -Os -ffunction-sections -fdata-sections -Wall -Wno-missing-braces -Wno-char-subscripts -Wno-strict-overflow -pedantic -I ../include -I ../src -I../lexlib -Id:\devel\tvision\include -fno-rtti -mno-cygwin -L"D:\devel\tvision\lib\gcc_dll" -ltvision -lstdc++ -luuid -Wl,--out-implib=../bin/libscintilla.a

The symbol in the sciedit.o file appears to be __ZN8Document9FindTextAEiiPKcbbbbiPiP10CaseFolder

But, if I remove the "#include <windows.h>" from the sciedit.cxx I get a compiler error:

sciedit.cxx: In member function 'bool TScintillaEditor::search(const char*, ushort)':
sciedit.cxx:818:15: error: 'class Document' has no member named 'FindTextA'

I guess these problems would arise for whatever other method has a Win32 API similar name - haven't tried that, though.

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Comment By: https://www.google.com/accounts ()
Date: 2011-11-17 06:02

Message:
Ok, but the macro replacement doesn't happen in the module defining the
class, and it is also including <windows.h>. So the method is correctly
compiled as FindText.

Anyway, I have already considered undefing the macro, but that was after
the post.

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Comment By: Earnie Boyd (earnie)
Date: 2011-11-17 04:50

Message:
Maybe you can get by with defining WINDOWS_LEAN_AND_MEAN before including
windows.h.  FindText is defined in commdlg.h which isn't included if this
macro is defined.  The other option is to #undef FindText after including
windows.h.

This really isn't a compiler bug nor is it a runtime header bug.  Welcome
to the world of MACRO hell caused by the world of Microsoft Windows API.

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Comment By: https://www.google.com/accounts ()
Date: 2011-11-16 16:38

Message:
later edit: it seems that the preprocessor comes in and replaces the call
to pDoc->FindText(..) with pDoc->FindTextA(..)

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https://sourceforge.net/tracker/?func=detail&atid=102435&aid=3439065&group_id=2435