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Re: [PATCH] Add guality [p]type test.
- From: Mark Wielaard <mjw at redhat dot com>
- To: Richard Biener <richard dot guenther at gmail dot com>
- Cc: GCC Patches <gcc-patches at gcc dot gnu dot org>, Jason Merrill <jason at redhat dot com>, Cary Coutant <ccoutant at google dot com>, Alexandre Oliva <aoliva at redhat dot com>, Jakub Jelinek <jakub at redhat dot com>
- Date: Tue, 19 Aug 2014 13:05:59 +0200
- Subject: Re: [PATCH] Add guality [p]type test.
- Authentication-results: sourceware.org; auth=none
- References: <1403265071 dot 6147 dot 5 dot camel at bordewijk dot wildebeest dot org> <1404381209-11280-1-git-send-email-mjw at redhat dot com> <CAFiYyc2xMDLEJEK2iNbzjmt0tVsDzT1XLtt_0-vpVUzF1kHEXg at mail dot gmail dot com>
On Mon, 2014-07-07 at 11:57 +0200, Richard Biener wrote:
> Btw, why doesn't it succeed with LTO? I suspect it's because
> we drop the unused variables - try adding __attribute__((used)) to
> them.
You are right, this makes the whole new test PASS also with LTO:
2014-08-19 Mark Wielaard <mjw@redhat.com>
* gcc.dg/guality/const-volatile.c: Add `used' attribute to pi.
OK to commit?
Thanks,
Mark
diff --git a/gcc/testsuite/gcc.dg/guality/const-volatile.c b/gcc/testsuite/gcc.dg/guality/const-volatile.c
index 6c2b617..86460e4 100644
--- a/gcc/testsuite/gcc.dg/guality/const-volatile.c
+++ b/gcc/testsuite/gcc.dg/guality/const-volatile.c
@@ -7,7 +7,7 @@ const int ci;
volatile int vi;
const volatile int cvi;
-int *pi;
+int *pi __attribute__((used));
const int *pci;
volatile int *pvi;
const volatile int *pcvi;