From: Jason Merrill <jason@redhat.com>
Date: Thu, 26 Mar 2015 17:58:39 +0000 (-0400)
Subject: re PR c++/65525 (ICE: sorry, unimplemented: unexpected AST of kind mem_ref (-std... 
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=41b38772ccd584a384945c7b1fdd61f4712d9792;p=gcc.git

re PR c++/65525 (ICE: sorry, unimplemented: unexpected AST of kind mem_ref (-std=c++14, ICE: in potential_constant_expression_1, at cp/constexpr.c:4432))

	PR c++/65525
	* constexpr.c (potential_constant_expression_1): Handle MEM_REF.

From-SVN: r221699
---

diff --git a/gcc/cp/ChangeLog b/gcc/cp/ChangeLog
index 4ba45d72c6a..e3699f63c04 100644
--- a/gcc/cp/ChangeLog
+++ b/gcc/cp/ChangeLog
@@ -1,3 +1,8 @@
+2015-03-26  Jason Merrill  <jason@redhat.com>
+
+	PR c++/65525
+	* constexpr.c (potential_constant_expression_1): Handle MEM_REF.
+
 2015-03-25  Marek Polacek  <polacek@redhat.com>
 
 	PR c++/65558
diff --git a/gcc/cp/constexpr.c b/gcc/cp/constexpr.c
index 37b619d56ff..2f094721546 100644
--- a/gcc/cp/constexpr.c
+++ b/gcc/cp/constexpr.c
@@ -4395,6 +4395,7 @@ potential_constant_expression_1 (tree t, bool want_rval, bool strict,
     case ARRAY_RANGE_REF:
     case MEMBER_REF:
     case DOTSTAR_EXPR:
+    case MEM_REF:
     binary:
       for (i = 0; i < 2; ++i)
 	if (!RECUR (TREE_OPERAND (t, i), want_rval))
diff --git a/gcc/testsuite/g++.dg/parse/assign1.C b/gcc/testsuite/g++.dg/parse/assign1.C
new file mode 100644
index 00000000000..c0138c1449b
--- /dev/null
+++ b/gcc/testsuite/g++.dg/parse/assign1.C
@@ -0,0 +1,22 @@
+// PR c++/65525
+
+struct A
+{
+    int x;
+    char y; // Actually, short and bool (types smaller than int?) trigger this ICE too
+    // Also: the problem doesn't occur if you put the smaller type first, e.g. "char x; int y;"
+
+    A(int x) {} // custom ctor needed for ICE
+};
+
+int main()
+{
+    A a(0), x(1), y(2);
+
+    x = a; // OK
+    y = a; // OK
+    x = y = a; // ICE: sorry, unimplemented: unexpected AST of kind mem_ref
+    // internal compiler error: in potential_constant_expression_1, at cp/constexpr.c:4432
+
+    return 0;
+}