re PR c++/77752 (ICE on C++ code on x86_64-linux-gnu (internal compiler error: Segmen...

/cp
2017-03-21  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/77752
	* name-lookup.c (pushtag_1): Add check for bogus, non template,
	std::initializer_list.

/testsuite
2017-03-21  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/77752
	* g++.dg/cpp0x/initlist97.C: New.
	* g++.dg/cpp0x/initlist85.C: Update.

From-SVN: r246310

diff --git a/gcc/cp/ChangeLog b/gcc/cp/ChangeLog
index 20eaf63..3db9895 100644 (file)
--- a/gcc/cp/ChangeLog
+++ b/gcc/cp/ChangeLog
@@ -1,3 +1,9 @@
+2017-03-21  Paolo Carlini  <paolo.carlini@oracle.com>
+
+       PR c++/77752
+       * name-lookup.c (pushtag_1): Add check for bogus, non template,
+       std::initializer_list.
+
 2017-03-21  Jakub Jelinek  <jakub@redhat.com>
 
        PR c++/35878

diff --git a/gcc/cp/name-lookup.c b/gcc/cp/name-lookup.c
index 994f7f0..4d7d3a1 100644 (file)
--- a/gcc/cp/name-lookup.c
+++ b/gcc/cp/name-lookup.c
@@ -6207,6 +6207,15 @@ pushtag_1 (tree name, tree type, tag_scope scope)
          decl = pushdecl_with_scope_1 (decl, b, /*is_friend=*/false);
          if (decl == error_mark_node)
            return decl;
+
+         if (DECL_CONTEXT (decl) == std_node
+             && strcmp (TYPE_NAME_STRING (type), "initializer_list") == 0
+             && !CLASSTYPE_TEMPLATE_INFO (type))
+           {
+             error ("declaration of std::initializer_list does not match "
+                    "#include <initializer_list>, isn't a template");
+             return error_mark_node;
+           }
        }
 
       if (! in_class)

diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 69cf112..a4d5873 100644 (file)
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,9 @@
+2017-03-21  Paolo Carlini  <paolo.carlini@oracle.com>
+
+       PR c++/77752
+       * g++.dg/cpp0x/initlist97.C: New.
+       * g++.dg/cpp0x/initlist85.C: Update.
+
 2017-03-21  Jakub Jelinek  <jakub@redhat.com>
 
        PR c/67338

diff --git a/gcc/testsuite/g++.dg/cpp0x/initlist85.C b/gcc/testsuite/g++.dg/cpp0x/initlist85.C
index fa4fb61..0b5ce49 100644 (file)
--- a/gcc/testsuite/g++.dg/cpp0x/initlist85.C
+++ b/gcc/testsuite/g++.dg/cpp0x/initlist85.C
@@ -3,14 +3,12 @@
 
 namespace std
 {
-  struct initializer_list {};  // { dg-message "initializer_list" }
+  struct initializer_list {};  // { dg-error "declaration" }
 }
 
 void foo(std::initializer_list &);
 
 void f()
 {
-  foo({1, 2});
+  foo({1, 2});  // { dg-error "invalid initialization" }
 }
-
-// { dg-prune-output "compilation terminated" }

diff --git a/gcc/testsuite/g++.dg/cpp0x/initlist97.C b/gcc/testsuite/g++.dg/cpp0x/initlist97.C
new file mode 100644 (file)
index 0000000..be47415
--- /dev/null
+++ b/gcc/testsuite/g++.dg/cpp0x/initlist97.C
@@ -0,0 +1,7 @@
+// PR c++/77752
+// { dg-do compile { target c++11 } }
+
+namespace std {
+  class initializer_list;  // { dg-error "declaration" }
+}
+void f(std::initializer_list l) { f({2}); }  // { dg-error "incomplete type" }