re PR c++/35321 (ICE with invalid use of __builtin_offsetof)

2008-08-27  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/35321
	* c-common.c (fold_offsetof_1): Handle TARGET_EXPR like CALL_EXPR.

/testsuite
2008-08-27  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/35321
	* g++.dg/parse/offsetof8.C: New.

From-SVN: r139628

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index d89d63e..4b237af 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2008-08-27  Paolo Carlini  <paolo.carlini@oracle.com>
+
+       PR c++/35321
+       * c-common.c (fold_offsetof_1): Handle TARGET_EXPR like CALL_EXPR.
+
 2008-08-27  Paul Brook  <paul@codesourcery.com>
 
        * config.gcc: Loosen checks for arm uclinux eabi targets.

diff --git a/gcc/c-common.c b/gcc/c-common.c
index 811092e..d06c969 100644 (file)
--- a/gcc/c-common.c
+++ b/gcc/c-common.c
@@ -7685,6 +7685,7 @@ fold_offsetof_1 (tree expr, tree stop_ref)
       return error_mark_node;
 
     case CALL_EXPR:
+    case TARGET_EXPR:
       error ("cannot apply %<offsetof%> when %<operator[]%> is overloaded");
       return error_mark_node;
 

diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 42d12a2..fb2a21a 100644 (file)
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2008-08-27  Paolo Carlini  <paolo.carlini@oracle.com>
+
+       PR c++/35321
+       * g++.dg/parse/offsetof8.C: New.
+
 2008-08-27  Manuel Lopez-Ibanez  <manu@gcc.gnu.org>
 
        PR c++/17880

diff --git a/gcc/testsuite/g++.dg/parse/offsetof8.C b/gcc/testsuite/g++.dg/parse/offsetof8.C
new file mode 100644 (file)
index 0000000..9add91e
--- /dev/null
+++ b/gcc/testsuite/g++.dg/parse/offsetof8.C
@@ -0,0 +1,16 @@
+// PR c++/35321
+
+struct A
+{
+  A operator[] (int);
+};
+
+struct B
+{
+  A a;
+};
+
+void foo()
+{
+  __builtin_offsetof(B, a[0]); /* { dg-error "error: cannot apply 'offsetof' when 'operator\\\[\\\]' is overloaded" } */
+}