Add more FDE sorting to fix unwind_trace_test (x86-64 PIC)

llvm-gcc-4.2/gcc/unwind-dw2-fde.c

Index: llvm-gcc-4.2/gcc/unwind-dw2-fde.c
===================================================================
--- a/llvm-gcc-4.2/gcc/unwind-dw2-fde.c
+++ b/llvm-gcc-4.2/gcc/unwind-dw2-fde.c
@@ -588,6 +588,11 @@
       fde_split (ob, fde_compare, accu->linear, accu->erratic);
       gcc_assert (accu->linear->count + accu->erratic->count == count);
       frame_heapsort (ob, fde_compare, accu->erratic);
+      // @LOCALMOD-BEGIN
+      // Sorting just the erratic and then merging with the linear,

[robertm, 2010/12/14 22:04:18]

can you reference the bug from here as well

+      // can still leave it unsorted sometimes. Sort the linear as well!
+      frame_heapsort (ob, fde_compare, accu->linear);
+      // @LOCALMOD-END
       fde_merge (ob, fde_compare, accu->linear, accu->erratic);
       free (accu->erratic);
     }