[Bug libgcj/40860] [4.4/4.5 regression] regressions in libjava testsuite on arm-linux

["mikpe at it dot uu dot se" <gcc-bugzilla at gcc dot gnu dot org>]

------- Comment #22 from mikpe at it dot uu dot se  2010-03-17 21:23 -------
I did another binutils experiment. I reverted my patch to disable general
merging of table entries, and instead disabled generating new and merging
cantunwind entries. With that binutils libjava regressed just like with vanilla
post-2.19.1 binutils. The general merging bit seems to be the problem.

--- binutils-2.20.51/bfd/elf32-arm.c.~1~
+++ binutils-2.20.51/bfd/elf32-arm.c
@@ -9148,6 +9148,7 @@ adjust_exidx_size(asection *exidx_sec, i
   bfd_set_section_size (out_sec->owner, out_sec, out_sec->size +adjust);
 }

+#if 0
 /* Insert an EXIDX_CANTUNWIND marker at the end of a section.  */
 static void
 insert_cantunwind_after(asection *text_sec, asection *exidx_sec)
@@ -9162,6 +9163,7 @@ insert_cantunwind_after(asection *text_s

   adjust_exidx_size(exidx_sec, 8);
 }
+#endif

 /* Scan .ARM.exidx tables, and create a list describing edits which should be
    made to those tables, such that:
@@ -9248,7 +9250,9 @@ elf32_arm_fix_exidx_coverage (asection *
          if (sec->size == 0)
            continue;

+#if 0
          insert_cantunwind_after(last_text_sec, last_exidx_sec);
+#endif
          last_unwind_type = 0;
          continue;
        }
@@ -9282,8 +9286,10 @@ elf32_arm_fix_exidx_coverage (asection *
          /* An EXIDX_CANTUNWIND entry.  */
          if (second_word == 1)
            {
+#if 0
              if (last_unwind_type == 0)
                elide = 1;
+#endif
              unwind_type = 0;
            }
          /* Inlined unwinding data.  Merge if equal to previous.  */
@@ -9326,8 +9332,10 @@ elf32_arm_fix_exidx_coverage (asection *
     }

   /* Add terminating CANTUNWIND entry.  */
+#if 0
   if (last_exidx_sec && last_unwind_type != 0)
     insert_cantunwind_after(last_text_sec, last_exidx_sec);
+#endif

   return TRUE;
 }


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40860