[gcc(refs/vendors/redhat/heads/gcc-10-branch)] [pr84733] Fix ICE popping local scope

[Jakub Jelinek]

https://gcc.gnu.org/g:c7fc15f54b321b2522ae26abebb86957de5c6fae

commit c7fc15f54b321b2522ae26abebb86957de5c6fae
Author: Nathan Sidwell <nathan@acm.org>
Date:   Fri Mar 27 13:09:12 2020 -0700

    [pr84733]  Fix ICE popping local scope
    
            PR c++/84733
            * name-lookup.c (do_pushdecl): Look through cleanp levels.

Diff:
---
 gcc/cp/ChangeLog                      |  5 +++++
 gcc/cp/name-lookup.c                  |  3 ++-
 gcc/testsuite/g++.dg/lookup/pr84733.C | 21 +++++++++++++++++++++
 gcc/testsuite/g++.dg/lookup/pr94257.C | 16 ++++++++++++++++
 4 files changed, 44 insertions(+), 1 deletion(-)

diff --git a/gcc/cp/ChangeLog b/gcc/cp/ChangeLog
index 2a2e6eac7bf..885f29d8c86 100644
--- a/gcc/cp/ChangeLog
+++ b/gcc/cp/ChangeLog
@@ -1,3 +1,8 @@
+2020-03-27  Nathan Sidwell  <nathan@acm.org>
+
+	PR c++/84733
+	* name-lookup.c (do_pushdecl): Look through cleanp levels.
+
 2020-03-27  Martin Sebor  <msebor@redhat.com>
 
 	PR c++/94078
diff --git a/gcc/cp/name-lookup.c b/gcc/cp/name-lookup.c
index e6dfb9cc723..8dd0b0d723e 100644
--- a/gcc/cp/name-lookup.c
+++ b/gcc/cp/name-lookup.c
@@ -2998,7 +2998,8 @@ do_pushdecl (tree decl, bool is_friend)
   /* The binding level we will be pushing into.  During local class
      pushing, we want to push to the containing scope.  */
   cp_binding_level *level = current_binding_level;
-  while (level->kind == sk_class)
+  while (level->kind == sk_class
+	 || level->kind == sk_cleanup)
     level = level->level_chain;
 
   /* An anonymous namespace has a NULL DECL_NAME, but we still want to
diff --git a/gcc/testsuite/g++.dg/lookup/pr84733.C b/gcc/testsuite/g++.dg/lookup/pr84733.C
new file mode 100644
index 00000000000..d0394eab891
--- /dev/null
+++ b/gcc/testsuite/g++.dg/lookup/pr84733.C
@@ -0,0 +1,21 @@
+// { dg-do compile { target c++11 } }
+// PR c++/84733 ICE popping local binding after cleanup region
+
+struct c {
+  ~c();
+} b;
+
+void f() {
+#ifndef OK
+  try {
+  d:
+    ;
+  } catch (int) {
+  }
+#endif
+  decltype(b) a;
+  int e;
+  struct e { } f;
+  e = 5;
+  struct e j;
+}
diff --git a/gcc/testsuite/g++.dg/lookup/pr94257.C b/gcc/testsuite/g++.dg/lookup/pr94257.C
new file mode 100644
index 00000000000..d92e2920cd0
--- /dev/null
+++ b/gcc/testsuite/g++.dg/lookup/pr94257.C
@@ -0,0 +1,16 @@
+// { dg-do compile { target c++11 } }
+// PR94257 ICE with silly inline nest.
+
+inline namespace B { // { dg-message "namespace B { }" }
+namespace B { }  // { dg-message "namespace B::B { }" }
+}
+
+namespace B { // { dg-error ".namespace B. is ambiguous" }
+}
+
+// But this is fine
+namespace D {
+inline namespace D { }
+}
+namespace D {
+}