[llvm-commits] [llvm-gcc-4.2] r57992 - /llvm-gcc-4.2/trunk/gcc/llvm-convert.cpp

[Duncan Sands]

Hi Devang,

> > PS: I debugged this directly on tramp3d-v4 rather
> > than reducing a testcase.  I can try to reduce a
> > testcase if you like.
> 
> 
> I reduced test case in testsuite will help us avoid debugging tramp3d- 
> v4 directly again in future :)

I reduced it using delta to the attached.  If you apply this
patch to llvm-gcc then it will barf at the appropriate point.

Index: gcc-4.2.llvm/gcc/llvm-types.cpp
===================================================================
--- gcc-4.2.llvm.orig/gcc/llvm-types.cpp	2008-10-29 09:47:52.000000000 +0100
+++ gcc-4.2.llvm/gcc/llvm-types.cpp	2008-10-29 10:54:20.000000000 +0100
@@ -2132,6 +2132,10 @@
       unsigned FieldNo =
         Info->getLLVMFieldFor(FieldOffsetInBits, CurFieldNo, isZeroSizeField);
       SetFieldIndex(Field, FieldNo);
+
+      assert((isBitfield(Field) || FieldNo == ~0U ||
+             FieldOffsetInBits == 8*Info->ElementOffsetInBytes[FieldNo]) &&
+             "Wrong LLVM field offset!");
     }
 
   // Put the original gcc struct back the way it was; necessary to prevent the
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