[LLVMbugs] [Bug 12708] New: In microsoft, support __fastcall on functions without prototype

bugzilla-daemon at llvm.org bugzilla-daemon at llvm.org
Mon Apr 30 14:54:21 PDT 2012


             Bug #: 12708
           Summary: In microsoft, support __fastcall on functions without
           Product: clang
           Version: unspecified
          Platform: PC
        OS/Version: Windows NT
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: Frontend
        AssignedTo: unassignedclangbugs at nondot.org
        ReportedBy: nicolasweber at gmx.de
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified

handleFunctionTypeAttr in SemaType.cpp

C:\src\chrome\src>type test.c
void __fastcall f() {

C:\src\chrome\src>cl /c test.c
Microsoft (R) 32-bit C/C++ Optimizing Compiler Version 16.00.30319.01 for 80x86
Copyright (C) Microsoft Corporation.  All rights reserved.


C:\src\chrome\src>..\..\llvm-build\bin\Release\clang.exe -c test.c
test.c:1:6: error: function with no prototype cannot use fastcall calling
void __fastcall f() {
1 error generated.

This is used in lzma_sdk if _MSC_VER is defined.

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