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46 lines
2.9 KiB
Diff
46 lines
2.9 KiB
Diff
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https://github.com/erlang/otp/pull/2503
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From 9fad0c9b71808458e857cbd3871cf80f46a75af1 Mon Sep 17 00:00:00 2001
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From: Sergei Trofimovich <slyfox@gentoo.org>
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Date: Tue, 14 Jan 2020 23:15:01 +0000
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Subject: [PATCH] ei_portio.h: avoid ODR violation of
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'ei_default_socket_callbacks'
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Noticed as a build failure against fresh gcc-master:
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```
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LD otp/lib/erl_interface/bin/x86_64-unknown-linux-gnu/erl_call
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ld: otp/lib/erl_interface/obj/x86_64-unknown-linux-gnu/libei.a(eirecv.o):otp/lib/erl_interface/src/misc/ei_portio.h:50: multiple definition of `ei_default_socket_callbacks'; otp/lib/erl_interface/obj/x86_64-unknown-linux-gnu/libei.a(ei_connect.o):otp/lib/erl_interface/src/misc/ei_portio.h:50: first defined here
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ld: otp/lib/erl_interface/obj/x86_64-unknown-linux-gnu/libei.a(send.o):otp/lib/erl_interface/src/misc/ei_portio.h:50: multiple definition of `ei_default_socket_callbacks'; otp/lib/erl_interface/obj/x86_64-unknown-linux-gnu/libei.a(ei_connect.o):otp/lib/erl_interface/src/misc/ei_portio.h:50: first defined here
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ld: otp/lib/erl_interface/obj/x86_64-unknown-linux-gnu/libei.a(send_reg.o):otp/lib/erl_interface/src/misc/ei_portio.h:50: multiple definition of `ei_default_socket_callbacks'; otp/lib/erl_interface/obj/x86_64-unknown-linux-gnu/libei.a(ei_connect.o):otp/lib/erl_interface/src/misc/ei_portio.h:50: first defined here
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ld: otp/lib/erl_interface/obj/x86_64-unknown-linux-gnu/libei.a(epmd_port.o):otp/lib/erl_interface/src/misc/ei_portio.h:50: multiple definition of `ei_default_socket_callbacks'; otp/lib/erl_interface/obj/x86_64-unknown-linux-gnu/libei.a(ei_connect.o):otp/lib/erl_interface/src/misc/ei_portio.h:50: first defined here
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ld: otp/lib/erl_interface/obj/x86_64-unknown-linux-gnu/libei.a(ei_portio.o):otp/lib/erl_interface/src/misc/ei_portio.h:50: multiple definition of `ei_default_socket_callbacks'; otp/lib/erl_interface/obj/x86_64-unknown-linux-gnu/libei.a(ei_connect.o):otp/lib/erl_interface/src/misc/ei_portio.h:50: first defined here
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collect2: error: ld returned 1 exit status
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make[3]: *** [x86_64-unknown-linux-gnu/Makefile:669: otp/lib/erl_interface/bin/x86_64-unknown-linux-gnu/erl_call] Error 1
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```
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The failure looks legitimate: `ei_default_socket_callbacks` is a
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struct defined in 'ei_portio.h' and in 'ei_portio.c'.
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The change flips 'ei_portio.h' definition to declaration.
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Signed-off-by: Sergei Trofimovich <slyfox@gentoo.org>
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---
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lib/erl_interface/src/misc/ei_portio.h | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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--- a/lib/erl_interface/src/misc/ei_portio.h
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+++ b/lib/erl_interface/src/misc/ei_portio.h
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@@ -47,7 +47,7 @@ int ei_writev_fill_ctx_t__(ei_socket_callbacks *cbs, void *ctx, const struct iov
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int ei_socket_callbacks_have_writev__(ei_socket_callbacks *cbs);
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#endif
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-ei_socket_callbacks ei_default_socket_callbacks;
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+extern ei_socket_callbacks ei_default_socket_callbacks;
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#define EI_FD_AS_CTX__(FD) \
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((void *) (long) (FD))
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--
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2.25.0
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