tests: lib: cpp: cxx: Add test to verify C++ compilation #96944
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| # Verify struct _cpu_arch struct _thread_arch are compatible with C++ when | ||
| # specific configs are enabled. | ||
| cpp.main.empty_struct_size: | ||
| build_only: true | ||
| extra_configs: | ||
| - CONFIG_USERSPACE=n | ||
| - CONFIG_SMP=n | ||
| - CONFIG_FPU_SHARING=n |
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AFAICS, this is a RISC-V specific issue; so, this should be limited to arch_allow: riscv. Also, a RISC-V integration_platforms should be added.
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It looks like integration_platforms is not overriding the common integration_platforms at the top of the file which causes CI to fail, so I had to leave out arch_allow: riscv:
INFO: Potential tag based filters: {'kernel', 'cmsis_dsp', 'posix', 'wifi', 'mcumgr', 'bluetooth', 'net', 'test_framework'}
INFO: Potential test filters...(1 changed...)
INFO: /home/runner/work/zephyr/zephyr/zephyr/scripts/twister -c -T tests/lib/cpp/cxx --save-tests _test_plan_partial.json
INFO - Using Ninja..
INFO - Zephyr version: v4.2.0-5093-gc398f976766c
INFO - Using 'zephyr' toolchain.
INFO - Selecting default platforms per testsuite scenario
INFO - Building initial testsuite list...
INFO - Writing JSON report /home/runner/work/zephyr/zephyr/zephyr/twister-out/testplan.json
INFO - Writing JSON report _test_plan_partial.json
INFO: found boards:
INFO: No twister needed or partial twister run only...
INFO: Total tests gathered: 306
INFO: Error found: cpp.main.empty_struct_size on mps2/an385 (Not in testsuite arch allow list but is one of the integration platforms)
INFO: Error found: cpp.main.empty_struct_size on qemu_cortex_a53/qemu_cortex_a53 (Not in testsuite arch allow list but is one of the integration platforms)
INFO: Total tests to be run: 306
INFO: Total nodes to launch: 1
Changed files:
=========
tests/lib/cpp/cxx/testcase.yaml
=========
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|
When using clang to build for RISC-V with these configs:
CONFIG_CPP=y
CONFIG_USERSPACE=n
CONFIG_SMP=n
CONFIG_FPU_SHARING=n
we get the following warnings:
include/zephyr/arch/riscv/structs.h:11:1: error: empty struct has size 0
in C, size 1 in C++ [-Werror,-Wextern-c-compat]
11 | struct _cpu_arch {
| ^
include/zephyr/arch/riscv/thread.h:68:1: error: empty struct has size 0
in C, size 1 in C++ [-Werror,-Wextern-c-compat]
68 | struct _thread_arch {
| ^
This commit adds a test with those configs to verify compilation
succeeds. Although gcc doesn't emit these warnings, we can test with gcc
as well with a BUILD_ASSERT in include/zephyr/arch/riscv/thread.h and
include/zephyr/arch/riscv/structs.h.
Signed-off-by: Tom Hughes <[email protected]>
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When using clang to build for RISC-V with these configs:
we get the following warnings:
This commit adds a test with those configs to verify compilation
succeeds. Although gcc doesn't emit these warnings, we can test with gcc
as well with a
BUILD_ASSERTininclude/zephyr/arch/riscv/thread.handinclude/zephyr/arch/riscv/structs.hthat was added in #96943.