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DEV: hpack: fix trash build regression

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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 and should be backported to 2.7.
This commit is contained in:
Aurelien DARRAGON 2023-01-25 16:35:00 +01:00 committed by Willy Tarreau
parent 7cfbb81c85
commit 532ebee38e
1 changed files with 1 additions and 1 deletions
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2
dev/hpack/decode.c
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@ -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>