magic-enum: Disable unused-value warning in tests

With gcc 14.1.0, there is one compilation warning found in the
unit tests which cause ptest builds to fail:

test_containers.cpp:290:89: error:
value computed is not used [-Werror=unused-value]
  290 |   magic_enum::containers::set color_set_not_const {Color::RED,
Color::GREEN, Color::BLUE};
      |

This is the same behavior as described in [1]. Thus, we can safely treat
this specific warning not as an error until the gcc bug is fixed.

[1] https://gcc.gnu.org/bugzilla/show_bug.cgi?format=multiple&id=114970

Signed-off-by: Ricardo Simoes <ricardo.simoes@pt.bosch.com>
Signed-off-by: Mark Jonas <mark.jonas@de.bosch.com>
Reported-by: Martin Jansa <martin.jansa@gmail.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/meta-oe/recipes-extended/magic-enum/magic-enum_0.9.5.bb b/meta-oe/recipes-extended/magic-enum/magic-enum_0.9.5.bb
index 096f869c30..ee547f6348 100644
--- a/meta-oe/recipes-extended/magic-enum/magic-enum_0.9.5.bb
+++ b/meta-oe/recipes-extended/magic-enum/magic-enum_0.9.5.bb
@@ -30,6 +30,9 @@ do_install_ptest () {
     install -m 0755 ${B}/test/test_* ${D}${PTEST_PATH}/tests
 }
 
+# Workaround for bug 114970 reported for gcc 14.1.0
+CXXFLAGS += "-Wno-error=unused-value"
+
 # Add catkin and colcon (ROS build system) support
 FILES:${PN}-dev += "\
     ${datadir}/magic_enum/package.xml \