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From 494ae0c35c883632faf1d22b54083d3e97a7c129 Mon Sep 17 00:00:00 2001
From: Aurelien DARRAGON <adarragon@haproxy.com>
Date: Wed, 25 Jan 2023 16:35:00 +0100
Subject: [PATCH] DEV: hpack: fix `trash` build regression
Since 7d84439 ("BUILD: hpack: include global.h for the trash that is needed
in debug mode"), hpack decode tool fails to compile on targets that enable
USE_THREAD. (ie: linux-glibc target as reported by Christian Ruppert)
When building hpack devtool, we are including src/hpack-dec.c as a dependency.
src/hpack-dec.c relies on the global trash whe debug mode is enabled.
But as we're building hpack tool with a limited scope of haproxy
sources, global trash (which is declared in src/chunk.c) is not available.
Thus, src/hpack-dec.c relies on a local 'trash' variable declared within
dev/hpack/decode.c
This used to work fine until 7d84439.
But now that global.h is explicitely included in src/hpack-dec.c,
trash variable definition from decode.c conflicts with the one from global.h:
In file included from include/../src/hpack-dec.c:35,
from dev/hpack/decode.c:87:
include/haproxy/global.h:52:35: error: thread-local declaration of 'trash' follows non-thread-local declaration
52 | extern THREAD_LOCAL struct buffer trash;
Adding THREAD_LOCAL attribute to 'decode.c' local trash variable definition
makes the compiler happy again.
This should fix GH issue #2009
---
dev/hpack/decode.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/dev/hpack/decode.c b/dev/hpack/decode.c
index ae825120f..13c95c77a 100644
--- a/dev/hpack/decode.c
+++ b/dev/hpack/decode.c
@@ -30,7 +30,7 @@ uint8_t buf[MAX_RQ_SIZE];
char trash_buf[MAX_RQ_SIZE];
char tmp_buf[MAX_RQ_SIZE];
-struct buffer trash = { .area = trash_buf, .data = 0, .size = sizeof(trash_buf) };
+THREAD_LOCAL struct buffer trash = { .area = trash_buf, .data = 0, .size = sizeof(trash_buf) };
struct buffer tmp = { .area = tmp_buf, .data = 0, .size = sizeof(tmp_buf) };
/* displays a <len> long memory block at <buf>, assuming first byte of <buf>
--
2.34.1
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