25d71821c8
- Update to versio 5.6.3
* No upstream provided changelog.
* Add prevent_unused.patch to fix the build with clang > 13
Prevent unused but set variable warning
(https://github.com/apple/swift-corelibs-libdispatch/pull/764)
* Resolve rpmlint "E: libdispatch-devel no-binary" error by
declaring libdispatch-devel as noarch.
OBS-URL: https://build.opensuse.org/request/show/1011004
OBS-URL: https://build.opensuse.org/package/show/multimedia:apps/libdispatch?expand=0&rev=14
31 lines
1.1 KiB
Diff
31 lines
1.1 KiB
Diff
From 915f25141a7c57b6a2a3bc8697572644af181ec5 Mon Sep 17 00:00:00 2001
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From: Ben Barham <ben_barham@apple.com>
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Date: Mon, 6 Jun 2022 10:45:27 -0700
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Subject: [PATCH] Prevent unused but set variable warning
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`_dispatch_preemption_yield(++spins)` has an expansion to
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`(void)++spins`, but this isn't considered a use of `spins` in Clang.
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Add a `(void)spins` to prevent an unused variable warning.
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Resolves rdar://93596069.
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---
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src/shims/yield.c | 5 +++++
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2 files changed, 5 insertions(+), 3 deletions(-)
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diff --git a/src/shims/yield.c b/src/shims/yield.c
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index d0c5fff92..cf1f5cefd 100644
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--- a/src/shims/yield.c
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+++ b/src/shims/yield.c
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@@ -25,6 +25,11 @@ static void *
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__DISPATCH_WAIT_FOR_ENQUEUER__(void **ptr)
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{
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int spins = 0;
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+ // Different platforms may expand `_dispatch_preemption_yield` to a
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+ // no-op, but `(void)++spins` is not considered a use like
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+ // `(void)spins` is. Add a use to avoid unused var warnings.
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+ (void)spins;
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+
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void *value;
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while ((value = os_atomic_load(ptr, relaxed)) == NULL) {
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_dispatch_preemption_yield(++spins);
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