[PULL 5/7] target/hexagon: suppress unused variable warning

[Taylor Simpson <tsimpson@quicinc.com>]

From: Alessandro Di Federico <ale@rev.ng>

This patch manually suppresses a warning for an unused variable
(yynerrs) emitted by bison.

This warning has been triggered for the first time by clang 15.

This patch also disables `-Wextra`, which is not usually adopted in
QEMU. However, clang 15 triggers the warning fixed in this patch even in
absence of `-Wextra`.

Signed-off-by: Alessandro Di Federico <ale@rev.ng>
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Tested-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Taylor Simpson <tsimpson@quicinc.com>
Tested-by: Taylor Simpson <tsimpson@quicinc.com>
Message-Id: <20221221155327.1504117-1-ale@rev.ng>
---
 target/hexagon/idef-parser/idef-parser.y | 2 ++
 target/hexagon/meson.build               | 1 -
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/target/hexagon/idef-parser/idef-parser.y b/target/hexagon/idef-parser/idef-parser.y
index 8be44a0ad1..c14cb39500 100644
--- a/target/hexagon/idef-parser/idef-parser.y
+++ b/target/hexagon/idef-parser/idef-parser.y
@@ -99,6 +99,8 @@
 /* Input file containing the description of each hexagon instruction */
 input : instructions
       {
+          /* Suppress warning about unused yynerrs */
+          (void) yynerrs;
           YYACCEPT;
       }
       ;
diff --git a/target/hexagon/meson.build b/target/hexagon/meson.build
index e8f250fcac..c9d31d095c 100644
--- a/target/hexagon/meson.build
+++ b/target/hexagon/meson.build
@@ -197,7 +197,6 @@ if idef_parser_enabled and 'hexagon-linux-user' in target_dirs
          idef_parser_dir / 'parser-helpers.c'],
         include_directories: ['idef-parser', '../../include/'],
         dependencies: [glib_dep],
-        c_args: ['-Wextra'],
         native: true
     )
 
-- 
2.17.1