[LLVMbugs] [Bug 7025] New: __attribute__((regparm(3))) breaks declaratio <-> definition mapping

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=7025

           Summary: __attribute__((regparm(3)))  breaks declaratio <->
                    definition mapping
           Product: clang
           Version: trunk
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: C++
        AssignedTo: unassignedclangbugs at nondot.org
        ReportedBy: syntheticpp at gmx.net
                CC: llvmbugs at cs.uiuc.edu, dgregor at apple.com


When compiling Qt 4.7, building qmake stops due to this error,
(QT_FASTCALL is defined to __attribute__((regparm(3))) ):


src/corelib/tools/qchar.cpp:707:12: error: conflicting types for 'digitValue'
int QChar::digitValue(ushort ucs2)
           ^
...
In file included from include/QtCore/qchar.h:1:
src/corelib/tools/qchar.h:315:28: note: previous declaration is here
    static int QT_FASTCALL digitValue(ushort ucs2);
                           ^
...                                                     
src/corelib/tools/qchar.cpp:717:12: error: conflicting types for 'digitValue'
int QChar::digitValue(uint ucs4)

...
In file included from 
include/QtCore/qchar.h:1:
src/corelib/tools/qchar.h:314:28: note: previous declaration is here
    static int QT_FASTCALL digitValue(uint ucs4);
                           ^

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