ipa-devirt.c (odr_types_equivalent_p): Do not ICE if one of types is anonymous.

	* ipa-devirt.c (odr_types_equivalent_p): Do not ICE if one of types
	is anonymous.
	* g++.dg/lto/odr-1_0.C: New test.
	* g++.dg/lto/odr-1_1.C: New test.

From-SVN: r265484

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index ea92a4286cc0539dec2fc84f2246e1a2094394dc..2490eef47a540566329311041fe8e7c48fdddb9f 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2018-10-25  Jan Hubicka  <jh@suse.cz>
+
+       * ipa-devirt.c (odr_types_equivalent_p): Do not ICE if one of types
+       is anonymous.
+
 2018-10-25  Richard Biener  <rguenther@suse.de>
 
        PR tree-optimization/87665

diff --git a/gcc/ipa-devirt.c b/gcc/ipa-devirt.c
index 9564d651b2be9c5113d718918a921ad0c725eeae..466b61e5513c9e9970276a7b2f2603d4bd7fcb91 100644 (file)
--- a/gcc/ipa-devirt.c
+++ b/gcc/ipa-devirt.c
@@ -1265,6 +1265,13 @@ odr_types_equivalent_p (tree t1, tree t2, bool warn, bool *warned,
   /* Check first for the obvious case of pointer identity.  */
   if (t1 == t2)
     return true;
+  if ((type_with_linkage_p (t1) && type_in_anonymous_namespace_p (t1))
+      != (type_with_linkage_p (t2) && type_in_anonymous_namespace_p (t2)))
+    {
+      warn_odr (t1, t2, NULL, NULL, warn, warned,
+               G_("one of types is in anonymous namespace while other is not"));
+      return false;
+    }
   gcc_assert (!type_with_linkage_p (t1) || !type_in_anonymous_namespace_p (t1));
   gcc_assert (!type_with_linkage_p (t2) || !type_in_anonymous_namespace_p (t2));
 

diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 23b21906534c869a64be3a5bda3d79db9f2e5e9b..cdda13204d3ed649cbd3b38a1e560a1841c94866 100644 (file)
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,5 +1,11 @@
+2018-10-25  Jan Hubicka  <jh@suse.cz>
+
+       * g++.dg/lto/odr-1_0.C: New test.
+       * g++.dg/lto/odr-1_1.C: New test.
+
 2018-10-25  Thomas Preud'homme  <thomas.preudhomme@linaro.org>
 
+
        * gcc.dg/sibcall-9.c: Make v static.
        * gcc.dg/sibcall-10.c: Likewise.
 

diff --git a/gcc/testsuite/g++.dg/lto/odr-1_0.C b/gcc/testsuite/g++.dg/lto/odr-1_0.C
new file mode 100644 (file)
index 0000000..c59f169
--- /dev/null
+++ b/gcc/testsuite/g++.dg/lto/odr-1_0.C
@@ -0,0 +1,8 @@
+// PR c++/82414
+// { dg-lto-do link }
+struct a { // { dg-lto-warning "8: type 'struct a' violates the C\\+\\+ One Definition Rule" }
+  struct b *ptr; // { dg-lto-message "13: the first difference of corresponding definitions is field 'ptr'" }
+};
+void test(struct a *) // { dg-lto-warning "6: warning: 'test' violates the C++ One Definition Rule" }
+{
+}

diff --git a/gcc/testsuite/g++.dg/lto/odr-1_1.C b/gcc/testsuite/g++.dg/lto/odr-1_1.C
new file mode 100644 (file)
index 0000000..5cd6f6c
--- /dev/null
+++ b/gcc/testsuite/g++.dg/lto/odr-1_1.C
@@ -0,0 +1,12 @@
+namespace {
+  struct b;
+ }
+struct a {
+  struct b *ptr;
+};
+void test(struct a *);
+int
+main(void)
+{
+  test (0);
+}