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-rw-r--r--gcc/testsuite/g++.old-deja/g++.other/overcnv2.C27
1 files changed, 27 insertions, 0 deletions
diff --git a/gcc/testsuite/g++.old-deja/g++.other/overcnv2.C b/gcc/testsuite/g++.old-deja/g++.other/overcnv2.C
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index 000000000..9a5c4ca95
--- /dev/null
+++ b/gcc/testsuite/g++.old-deja/g++.other/overcnv2.C
@@ -0,0 +1,27 @@
+// { dg-do assemble }
+// { dg-options "-Wconversion" }
+// Test that we resolve this case as mandated by the standard, but also
+// warn about it. We choose op char* not because it is a member of B --
+// the standard says that all conversion ops are treated as coming from
+// the type of the argument -- but because it is non-const.
+
+struct A {
+ operator const char *() const { return ""; }
+};
+
+struct B : public A {
+ operator char *() { return 0; }
+};
+
+int main()
+{
+ B b;
+ if ((const char *)b != 0) // { dg-warning "choosing 'B" "B" } surprising overload resolution
+ // { dg-warning "for conversion" "conv" { target *-*-* } 19 }
+ // { dg-message "note" "note" { target *-*-* } 19 }
+ return 1;
+ if ((const char *)(const B)b == 0)
+ return 2;
+ if ((const char *)(const B &)b == 0)
+ return 3;
+}