[LLVMbugs] [Bug 17457] New: builtins va_arg_pack and va_arg_pack_len not implemented

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=17457

            Bug ID: 17457
           Summary: builtins va_arg_pack and va_arg_pack_len not
                    implemented
           Product: clang
           Version: 3.2
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: C++
          Assignee: unassignedclangbugs at nondot.org
          Reporter: rkotler at mips.com
                CC: dgregor at apple.com, llvmbugs at cs.uiuc.edu
    Classification: Unclassified

Created attachment 11333
  --> http://llvm.org/bugs/attachment.cgi?id=11333&action=edit
gcc test

/home/rkotler/llvmw/install/bin/../lib/clang/3.4/include/stdarg.h:33:29: note: 
      expanded from macro 'va_start'
#define va_start(ap, param) __builtin_va_start(ap, param)
                            ^
1 error generated.
rkotler at mipssw006:~/rt-rk-4doug/tmp$ ~/llvmw/install/bin/clang
../tests-c/va-arg-pack-len-1.c              -target mips-linux-gnu-gcc 
-gcc-toolchain 
/mips/arch/overflow/codesourcery/mips-linux-gnu/lite/release/2011.09-75/Linux
-EL    -Os  -std=gnu89  -mips16 -lm 
../tests-c/va-arg-pack-len-1.c:7:18: warning: unknown attribute '__error__'
      ignored [-Wattributes]
  __attribute__((__error__ ("open with O_CREAT needs 3 arguments, only ...
                 ^
../tests-c/va-arg-pack-len-1.c:9:18: warning: unknown attribute '__warning__'
      ignored [-Wattributes]
  __attribute__((__warning__ ("open called with more than 3 arguments")));
                 ^
../tests-c/va-arg-pack-len-1.c:81:7: error: use of unknown builtin
      '__builtin_va_arg_pack_len' [-Wimplicit-function-declaration]
  if (__builtin_va_arg_pack_len () > 1)
      ^
../tests-c/va-arg-pack-len-1.c:91:37: error: use of unknown builtin
      '__builtin_va_arg_pack' [-Wimplicit-function-declaration]
      return myopenva (path, oflag, __builtin_va_arg_pack ());
                                    ^
../tests-c/va-arg-pack-len-1.c:91:37: note: did you mean
      '__builtin_va_arg_pack_len'?
../tests-c/va-arg-pack-len-1.c:81:7: note: '__builtin_va_arg_pack_len' declared
      here
  if (__builtin_va_arg_pack_len () > 1)
      ^
2 warnings and 2 errors generated.

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