Remove UBSAN in dwarf2out.c (PR tree-optimization/82491).

2018-04-03  Martin Liska  <mliska@suse.cz>

	PR tree-optimization/82491
	* rtl.h (strip_offset_and_add): Replace += suboffset with
	poly_uint64 () + suboffset.

From-SVN: r259030

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 2a43c39a290c8770585750064c2215934d9884b2..bac81f8e5bc99c9ad8e54374ebc672811af2b079 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2018-04-03  Martin Liska  <mliska@suse.cz>
+
+       PR tree-optimization/82491
+       * rtl.h (strip_offset_and_add): Replace += suboffset with
+       poly_uint64 () + suboffset.
+
 2018-03-29  Martin Liska  <mliska@suse.cz>
            Martin Jambor  <mjambor@suse.cz>
 

diff --git a/gcc/rtl.h b/gcc/rtl.h
index f31b4ade9d3e91d7b8a773bc28923851ed26d3c2..0341ba01614bebf6d662e0bcfc32d1c34727e3d9 100644 (file)
--- a/gcc/rtl.h
+++ b/gcc/rtl.h
@@ -4339,7 +4339,7 @@ strip_offset_and_add (rtx x, poly_int64_pod *offset)
     {
       poly_int64 suboffset;
       x = strip_offset (x, &suboffset);
-      *offset += suboffset;
+      *offset = poly_uint64 (*offset) + suboffset;
     }
   return x;
 }