PR10467 cont'd: be tolerant of bad line numbers

If a line number is invalid for a source file, that should not be a
fatal error, as it may still be valid for some other matching source
file.

* dwflpp.cxx (dwflpp::iterate_over_srcfile_lines): Don't assert that the
  line must be found, just break out quietly.

1 files changed, 2 insertions, 5 deletions

diff --git a/dwflpp.cxx b/dwflpp.cxx
index 0d41dab8..7dd31d06 100644
--- a/dwflpp.cxx
+++ b/dwflpp.cxx
@@ -1027,16 +1027,13 @@ dwflpp::iterate_over_srcfile_lines (char const * srcfile,
 
       ret = dwarf_getsrc_file (module_dwarf, srcfile, l, 0,
 					 &srcsp, &nsrcs);
-      if (line_type != WILDCARD && line_type != RANGE)
-         dwarf_assert ("dwarf_getsrc_file", ret);
+      if (ret != 0) /* tolerate invalid line number */
+        break;
 
       if (line_type == WILDCARD || line_type == RANGE)
         {
           Dwarf_Addr line_addr;
 
-          if (ret != 0) /* tolerate invalid line number */
-   	     break;
-
           dwarf_lineno (srcsp [0], &lineno);
 	  /* Maybe lineno will exceed the input end */
 	  if (line_type == RANGE && lineno > lines[1])