Hi!
As mentioned in the PR, my C FE rvalue folding patch allows folding
const variable initializers into the uses of those variables in rvalue
contexts more than before, and so we get warnings about UB in the test,
because an unprototyped function is cast to a function type with ellipsis in
it.
It isn't entirely clear what exactly the test wants to test, as mentioned
in the PR, this is one of the options how to solve it, by dropping the
const it can't be optimized in the FEs (the optimizers can still figure out
the static vars are never written to). Another option would be just
add -w to dg-options, another one is const volatile.
Regtested on x86_64-linux and i686-linux, ok for trunk?
2017-11-27 Jakub Jelinek <ja...@redhat.com>
PR c/83117
* gcc.target/x86_64/abi/ms-sysv/gen.cc (make_do_tests_decl): Drop
const from do_test_{u,v}*.
--- gcc/testsuite/gcc.target/x86_64/abi/ms-sysv/gen.cc.jj 2017-05-22
10:49:45.000000000 +0200
+++ gcc/testsuite/gcc.target/x86_64/abi/ms-sysv/gen.cc 2017-11-27
11:57:14.889570915 +0100
@@ -392,7 +392,7 @@ static void make_do_tests_decl (const ve
continue;
comma.reset ();
- out << "static __attribute__ ((ms_abi)) long (*const do_test_"
+ out << "static __attribute__ ((ms_abi)) long (*do_test_"
<< (unaligned ? "u" : "")
<< (varargs ? "v" : "") << i << ") (";
Jakub
