37 lines
1.4 KiB
Diff
37 lines
1.4 KiB
Diff
From 9c3aed099b010a75594a0efd523774c4c9a5e3d2 Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?J=C3=BCri=20Valdmann?= <juri.valdmann@qt.io>
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Date: Tue, 15 Oct 2019 12:10:55 +0000
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Subject: [PATCH] GCC: Fix zlib symbol visibility macro
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GCC parses the function __attribute__ syntax a bit differently from Clang,
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associating the attribute with the return type instead of the function if the
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return type is a pointer. This leads to certain zlib symbols, such as
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Cr_z_zError, to fail to be properly exported from the shared library. Fix by
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using ZEXTERN instead of ZEXPORT for the attribute which works the same for both
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GCC and Clang.
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Bug: 819294
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Change-Id: I5707d1b0627a503df08df9ac0bb65fda69453989
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Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1859788
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Reviewed-by: Thomas Anderson <thomasanderson@chromium.org>
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Reviewed-by: Nico Weber <thakis@chromium.org>
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Commit-Queue: Nico Weber <thakis@chromium.org>
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Cr-Commit-Position: refs/heads/master@{#705917}
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---
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third_party/zlib/chromeconf.h | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/third_party/zlib/chromeconf.h b/third_party/zlib/chromeconf.h
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index e9aa3867d8512..666093d696a58 100644
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--- a/third_party/zlib/chromeconf.h
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+++ b/third_party/zlib/chromeconf.h
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@@ -13,7 +13,7 @@
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#define ZEXTERN __declspec(dllimport)
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#endif
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#elif defined(ZLIB_IMPLEMENTATION)
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-#define ZEXPORT __attribute__((visibility("default")))
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+#define ZEXTERN __attribute__((visibility("default")))
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#endif
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#endif
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