re PR debug/66728 (CONST_WIDE_INT causes corrupted DWARF debug info)

	PR debug/66728
	* dwarf2out.c (get_full_len): Return a value based upon the actual
	precision needed for the value.
	(add_const_value_attribute): Use a maximal wide-int for
	CONST_WIDE_INTs, not VOIDmode.
	(output_die): Don't ever output NULL with printf.

	* rtl.h (get_precision of rtx_mode_t): Ensure we never process
	BLKmode nor VOIDmode values.

From-SVN: r229885

1 files changed, 1 insertions, 0 deletions

diff --git a/gcc/rtl.h b/gcc/rtl.h
index fe081ed..194ed9b 100644
--- a/gcc/rtl.h
+++ b/gcc/rtl.h
@@ -2086,6 +2086,7 @@ namespace wi
 inline unsigned int
 wi::int_traits <rtx_mode_t>::get_precision (const rtx_mode_t &x)
 {
+  gcc_checking_assert (x.second != BLKmode && x.second != VOIDmode);
   return GET_MODE_PRECISION (x.second);
 }