svn commit: r244792 - head/contrib/gcc

[Pedro F. Giffuni]

Author: pfg
Date: Fri Dec 28 22:06:50 2012
New Revision: 244792
URL: http://svnweb.freebsd.org/changeset/base/244792

Log:
  gcc: avoid generating negative values to DW_AT_byte_size.
  
  The previous change was actually a NOP because size is
  unsigned and compilers are dumb.
  
  Submitted by:	Christoph Mallon
  MFC after:	1 week

Modified:
  head/contrib/gcc/dwarf2out.c

Modified: head/contrib/gcc/dwarf2out.c
==============================================================================
--- head/contrib/gcc/dwarf2out.c	Fri Dec 28 22:06:33 2012	(r244791)
+++ head/contrib/gcc/dwarf2out.c	Fri Dec 28 22:06:50 2012	(r244792)
@@ -10814,7 +10814,7 @@ add_byte_size_attribute (dw_die_ref die,
      indicates that the byte size of the entity in question is variable.  We
      have no good way of expressing this fact in Dwarf at the present time.
      GCC/35998: Avoid passing negative sizes to Dtrace and gdb.  */
-  add_AT_unsigned (die, DW_AT_byte_size, (size > 0 ? size : 0));
+  add_AT_unsigned (die, DW_AT_byte_size, (size != (unsigned)-1 ? size : 0));
 }
 
 /* For a FIELD_DECL node which represents a bit-field, output an attribute