[Bug debug/39563] C block scopes have no DW_TAG_lexical_block

[jakub at gcc dot gnu dot org]

------- Comment #3 from jakub at gcc dot gnu dot org  2009-03-27 16:33 -------
Created an attachment (id=17544)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=17544&action=view)
gcc44-pr39563.patch

Untested fix.

The problem with this patch is that DW_AT_decl_file and DW_AT_decl_line of the
DW_AT_external DW_TAG_variable and DW_TAG_subprogram DIEs is wrong.  Say for:
extern void abort (void);

int var = 1;

int
main (void)
{
  int var = 2;
  if (var != 2)
    abort ();

  {
    extern int var;
    extern void abort (void);
    if (var != 1)
      abort ();
    {
      int var = 3;
      if (var != 3)
abort ();
      {
extern int var;
extern void abort (void);
if (var != 1)
  abort ();
      }
    }
  }

  return 0;
}

for all DW_AT_external DW_TAG_variable DIEs DW_AT_decl_line is 3 and for abort
DW_AT_decl_line is the last extern void abort (void) line.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39563