backport: re PR c++/71871 (ICE on mixing templates and vector extensions ternary...

	Backported from mainline
	2016-07-18  Jakub Jelinek  <jakub@redhat.com>

	PR c++/71871
	* typeck.c (build_x_conditional_expr): Revert the 2012-10-25 change.

	* g++.dg/ext/vector31.C: New test.

From-SVN: r238464

diff --git a/gcc/cp/ChangeLog b/gcc/cp/ChangeLog
index c735c821b35469aadf6bd4bf88e737d1a71d9c9a..333ac411b609587602a1230af5ed4aae229a3ca0 100644 (file)
--- a/gcc/cp/ChangeLog
+++ b/gcc/cp/ChangeLog
@@ -1,3 +1,11 @@
+2016-07-19  Jakub Jelinek  <jakub@redhat.com>
+
+       Backported from mainline
+       2016-07-18  Jakub Jelinek  <jakub@redhat.com>
+
+       PR c++/71871
+       * typeck.c (build_x_conditional_expr): Revert the 2012-10-25 change.
+
 2016-07-07  Jakub Jelinek  <jakub@redhat.com>
 
        Backported from mainline

diff --git a/gcc/cp/typeck.c b/gcc/cp/typeck.c
index 9e438c9297f56196f45f92a9d31afe25725b36c5..669f54141387128d3c2114a8191d2c24caebdcb2 100644 (file)
--- a/gcc/cp/typeck.c
+++ b/gcc/cp/typeck.c
@@ -6125,8 +6125,7 @@ build_x_conditional_expr (location_t loc, tree ifexp, tree op1, tree op2,
     }
 
   expr = build_conditional_expr (loc, ifexp, op1, op2, complain);
-  if (processing_template_decl && expr != error_mark_node
-      && TREE_CODE (expr) != VEC_COND_EXPR)
+  if (processing_template_decl && expr != error_mark_node)
     {
       tree min = build_min_non_dep (COND_EXPR, expr,
                                    orig_ifexp, orig_op1, orig_op2);

diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index dbfbe96cca15071809ea962e5f7fe23fb3ce1e94..7743754f22f4f727058d43efa8ccf42e27fa649a 100644 (file)
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,6 +1,11 @@
 2016-07-19  Jakub Jelinek  <jakub@redhat.com>
 
        Backported from mainline
+       2016-07-18  Jakub Jelinek  <jakub@redhat.com>
+
+       PR c++/71871
+       * g++.dg/ext/vector31.C: New test.
+
        2016-07-11  Jakub Jelinek  <jakub@redhat.com>
 
        PR middle-end/71758

diff --git a/gcc/testsuite/g++.dg/ext/vector31.C b/gcc/testsuite/g++.dg/ext/vector31.C
new file mode 100644 (file)
index 0000000..a056839
--- /dev/null
+++ b/gcc/testsuite/g++.dg/ext/vector31.C
@@ -0,0 +1,29 @@
+// PR c++/71871
+// { dg-do compile }
+
+typedef unsigned int V __attribute__ ((__vector_size__ (32)));
+
+template <int N>
+void
+foo (V *x)
+{
+  V a = *x;
+  a = a ? a : -1;
+  *x = a;
+}
+
+template <typename T>
+void
+bar (T *x)
+{
+  T a = *x;
+  a = a ? a : -1;
+  *x = a;
+}
+
+void
+test (V *x, V *y)
+{
+  foo<0> (x);
+  bar<V> (y);
+}