This PR compains about ugly diagnostics where we print
template argument '2' does not match '#'integer_cst' not supported by
dump_decl#<declaration error>'
The following patch teaches dump_decl how to print constants properly.
Bootstrapped/regtested on x86_64-linux, ok for trunk?
2016-05-19 Marek Polacek <pola...@redhat.com>
PR c++/71075
* error.c (dump_decl): Handle *_CST.
* g++.dg/diagnostic/pr71075.C: New test.
diff --git gcc/cp/error.c gcc/cp/error.c
index 7d70f89..d3232bd 100644
--- gcc/cp/error.c
+++ gcc/cp/error.c
@@ -1269,6 +1269,14 @@ dump_decl (cxx_pretty_printer *pp, tree t, int flags)
dump_type (pp, t, flags);
break;
+ case VOID_CST:
+ case INTEGER_CST:
+ case REAL_CST:
+ case STRING_CST:
+ case COMPLEX_CST:
+ pp->constant (t);
+ break;
+
default:
pp_unsupported_tree (pp, t);
/* Fall through to error. */
diff --git gcc/testsuite/g++.dg/diagnostic/pr71075.C
gcc/testsuite/g++.dg/diagnostic/pr71075.C
index e69de29..6bb1e68 100644
--- gcc/testsuite/g++.dg/diagnostic/pr71075.C
+++ gcc/testsuite/g++.dg/diagnostic/pr71075.C
@@ -0,0 +1,8 @@
+// PR c++/71075
+
+template<typename T, int I> struct A {};
+template<typename T> void foo(A<T,1>) {}
+int main() {
+ foo(A<int,2>()); // { dg-error "no matching" }
+// { dg-message "template argument .2. does not match .1." "" { target *-*-* }
6 }
+}
Marek
