[LLVMdev] non-POD type with llvm-objdump

[Joe Abbey]

Oh man r142320 fixed this.

Wow... talk about off-by-one.

Joe

Joe Abbey
Software Architect
Arxan Technologies, Inc.
1305 Cumberland Ave, Ste 215
West Lafayette, IN 47906
jabbey at arxan.com<mailto:jabbey at arxan.com>
www.arxan.com

On Oct 18, 2011, at 8:01 PM, Eli Friedman wrote:

On Tue, Oct 18, 2011 at 4:25 PM, Joe Abbey <jabbey at arxan.com<mailto:jabbey at arxan.com>> wrote:
I'm so close to having LLVM build on PowerPC.  If there's any PowerPC
experts, help?
Lines like this:
      outs() << "[" << format("%2d", i) << "]"
             << "(sec " << format("%2d", int16_t(symbol->SectionNumber)) <<
")"
             << "(fl 0x" << format("%02x", symbol->Type.BaseType) << ")"
             << "(ty " << format("%3x", symbol->Type.ComplexType) << ")"
             << "(scl " << format("%3x", symbol->StorageClass) << ") "
             << "(nx " << unsigned(symbol->NumberOfAuxSymbols) << ") "
             << "0x" << format("%08x", symbol->Value) << " "
             << name << "\n";
Are trying to call the format function with
struct coff_symbol {
  struct StringTableOffset {
    support::ulittle32_t Zeroes;
    support::ulittle32_t Offset;
  };
  union {
    char ShortName[8];
    StringTableOffset Offset;
  } Name;
  support::ulittle32_t Value;
  support::little16_t SectionNumber;
  struct {
    support::ulittle8_t BaseType;
    support::ulittle8_t ComplexType;
  } Type;
  support::ulittle8_t  StorageClass;
  support::ulittle8_t  NumberOfAuxSymbols;
};
and on PowerPC it generates errors like:
/Users/jabbey/src/llvm/include/llvm/Support/Format.h: In member function
'int llvm::format_object1<T>::snprint(char*, unsigned int) const [with T =
llvm::support::detail::packed_endian_specific_integral<unsigned int, little,
unaligned>]':
/Users/jabbey/src/llvm/tools/llvm-objdump/llvm-objdump.cpp:622:
instantiated from here
/Users/jabbey/src/llvm/include/llvm/Support/Format.h:88: warning: cannot
pass objects of non-POD type 'const struct
llvm::support::detail::packed_endian_specific_integral<unsigned int, little,
unaligned>' through '...'; call will abort at runtime
/Users/jabbey/src/llvm/include/llvm/Support/Format.h: In member function
'int llvm::format_object2<T1, T2>::snprint(char*, unsigned int) const [with
T1 = llvm::support::detail::packed_endian_specific_integral<unsigned char,
little, unaligned>, T2 =
llvm::support::detail::packed_endian_specific_integral<unsigned char,
little, unaligned>]':
/Users/jabbey/src/llvm/tools/llvm-objdump/llvm-objdump.cpp:622:
instantiated from here
/Users/jabbey/src/llvm/include/llvm/Support/Format.h:106: warning: cannot
pass objects of non-POD type 'const struct
llvm::support::detail::packed_endian_specific_integral<unsigned char,
little, unaligned>' through '...'; call will abort at runtime
Can I just cast the value, or would the correct fix be in something like
include/llvm/Support/Endian.h?

Try to "svn up" first. :)

-Eli

_______________________________________________
LLVM Developers mailing list
LLVMdev at cs.uiuc.edu<mailto:LLVMdev at cs.uiuc.edu>         http://llvm.cs.uiuc.edu
http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20111018/4729123c/attachment.html>