From: Petr Machata <pmachata@redhat.com>
Date: Wed, 9 Mar 2011 23:51:43 +0000 (+0100)
Subject: dwarflint: Detect and diagnose empty CU
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=cd6f72e1db09f5dc64435c46f77e45b105d88af2;p=thirdparty%2Felfutils.git

dwarflint: Detect and diagnose empty CU
---

diff --git a/dwarflint/check_debug_info.cc b/dwarflint/check_debug_info.cc
index c05e438a5..f413ff856 100644
--- a/dwarflint/check_debug_info.cc
+++ b/dwarflint/check_debug_info.cc
@@ -1021,14 +1021,18 @@ check_debug_info::check_cu_structural (struct read_ctx *ctx,
   WIPE (local_die_refs);
 
   cu->cudie_offset = read_ctx_get_offset (ctx) + cu->head->offset;
-  if (read_die_chain (ver, _m_file, ctx, cu, &abbrevs, strings,
-		      &local_die_refs, strings_coverage,
-		      (reloc != NULL && reloc->size > 0) ? reloc : NULL,
-		      &_m_cov, &_m_need_ranges, 0) < 0)
+  int st = read_die_chain (ver, _m_file, ctx, cu, &abbrevs, strings,
+			   &local_die_refs, strings_coverage,
+			   (reloc != NULL && reloc->size > 0) ? reloc : NULL,
+			   &_m_cov, &_m_need_ranges, 0);
+  if (st < 0)
     {
       _m_abbr_skip.push_back (abbrevs.offset);
       retval = false;
     }
+  else if (st == 0)
+    wr_error (cu->head->where)
+      << "CU contains no DIEs." << std::endl;
   else if (!check_die_references (cu, &local_die_refs))
     retval = false;