diff options
author | Sean Christopherson <seanjc@google.com> | 2023-11-29 23:49:16 +0100 |
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committer | Sean Christopherson <seanjc@google.com> | 2023-12-01 17:15:41 +0100 |
commit | 1b2658e4c709135fe1910423d3216632f641baf9 (patch) | |
tree | e7a2334f4a1cf840b1c3903fd3dfef2ce06076b4 | |
parent | KVM: selftests: Fix broken assert messages in Hyper-V features test (diff) | |
download | linux-1b2658e4c709135fe1910423d3216632f641baf9.tar.xz linux-1b2658e4c709135fe1910423d3216632f641baf9.zip |
KVM: selftests: Annotate guest ucall, printf, and assert helpers with __printf()
Annotate guest printf helpers with __printf() so that the compiler will
warn about incorrect formatting at compile time (see git log for how easy
it is to screw up with the formatting).
Suggested-by: Maxim Levitsky <mlevitsk@redhat.com>
Link: https://lore.kernel.org/r/20231129224916.532431-5-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
-rw-r--r-- | tools/testing/selftests/kvm/include/test_util.h | 2 | ||||
-rw-r--r-- | tools/testing/selftests/kvm/include/ucall_common.h | 7 |
2 files changed, 5 insertions, 4 deletions
diff --git a/tools/testing/selftests/kvm/include/test_util.h b/tools/testing/selftests/kvm/include/test_util.h index a0c7dd3a5b30..71a41fa924b7 100644 --- a/tools/testing/selftests/kvm/include/test_util.h +++ b/tools/testing/selftests/kvm/include/test_util.h @@ -191,7 +191,7 @@ static inline uint32_t atoi_non_negative(const char *name, const char *num_str) } int guest_vsnprintf(char *buf, int n, const char *fmt, va_list args); -int guest_snprintf(char *buf, int n, const char *fmt, ...); +__printf(3, 4) int guest_snprintf(char *buf, int n, const char *fmt, ...); char *strdup_printf(const char *fmt, ...) __attribute__((format(printf, 1, 2), nonnull(1))); diff --git a/tools/testing/selftests/kvm/include/ucall_common.h b/tools/testing/selftests/kvm/include/ucall_common.h index 0fb472a5a058..d9d6581b8d4f 100644 --- a/tools/testing/selftests/kvm/include/ucall_common.h +++ b/tools/testing/selftests/kvm/include/ucall_common.h @@ -34,9 +34,10 @@ void ucall_arch_do_ucall(vm_vaddr_t uc); void *ucall_arch_get_ucall(struct kvm_vcpu *vcpu); void ucall(uint64_t cmd, int nargs, ...); -void ucall_fmt(uint64_t cmd, const char *fmt, ...); -void ucall_assert(uint64_t cmd, const char *exp, const char *file, - unsigned int line, const char *fmt, ...); +__printf(2, 3) void ucall_fmt(uint64_t cmd, const char *fmt, ...); +__printf(5, 6) void ucall_assert(uint64_t cmd, const char *exp, + const char *file, unsigned int line, + const char *fmt, ...); uint64_t get_ucall(struct kvm_vcpu *vcpu, struct ucall *uc); void ucall_init(struct kvm_vm *vm, vm_paddr_t mmio_gpa); int ucall_nr_pages_required(uint64_t page_size); |