Re: [PATCH 9/9] target/i386: Replace sprintf() by snprintf()

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On 4/11/24 03:43, Philippe Mathieu-Daudé wrote:
sprintf() is deprecated on Darwin since macOS 13.0 / XCode 14.1,
resulting in painful developper experience. Use snprintf() instead.

Signed-off-by: Philippe Mathieu-Daudé <philmd@xxxxxxxxxx>
---
  target/i386/kvm/kvm.c | 3 ++-
  1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/target/i386/kvm/kvm.c b/target/i386/kvm/kvm.c
index e68cbe9293..a46d1426bf 100644
--- a/target/i386/kvm/kvm.c
+++ b/target/i386/kvm/kvm.c
@@ -5335,7 +5335,8 @@ int kvm_arch_handle_exit(CPUState *cs, struct kvm_run *run)
      case KVM_EXIT_NOTIFY:
          ctx_invalid = !!(run->notify.flags & KVM_NOTIFY_CONTEXT_INVALID);
          state = KVM_STATE(current_accel());
-        sprintf(str, "Encounter a notify exit with %svalid context in"
+        snprintf(str, sizeof(str),
+                     "Encounter a notify exit with %svalid context in"
                       " guest. There can be possible misbehaves in guest."
                       " Please have a look.", ctx_invalid ? "in" : "");
          if (ctx_invalid ||

In the larger context,

        if (ctx_invalid ||
            state->notify_vmexit == NOTIFY_VMEXIT_OPTION_INTERNAL_ERROR) {
            warn_report("KVM internal error: %s", str);
            ret = -1;
        } else {
            warn_report_once("KVM: %s", str);
            ret = 0;
        }

so there's really no need to sprintf into a buffer at all -- just pass it all to warn_report_*.

The English text could use some improvement as well.  :-)


r~




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