Approved by Jim Blandy (jimb@redhat.com).

[thirdparty/binutils-gdb.git] / gdb / symtab.h

diff --git a/gdb/symtab.h b/gdb/symtab.h
index f01cbbe012d2387ad97d8c882656241fc8daa017..75470e60f7550d100acf66e25323e1e1b78642e0 100644 (file)
--- a/gdb/symtab.h
+++ b/gdb/symtab.h
@@ -801,7 +801,10 @@ struct linetable_entry
    30   0x300
    10   0x400   - for the increment part of a for stmt.
 
- */
+   If an entry has a line number of zero, it marks the start of a PC
+   range for which no line number information is available.  It is
+   acceptable, though wasteful of table space, for such a range to be
+   zero length.  */
 
 struct linetable
   {