[Bug 1874073] Re: openrisc_sim.c:87:42: error: 'cpu_irqs[0]' may be used uninitialized in this function [-Werror=maybe-uninitialized]

[Philippe Mathieu-Daudé]

Confirming Peter's suggestion does silent the warning.

-- >8 --
diff --git a/hw/openrisc/openrisc_sim.c b/hw/openrisc/openrisc_sim.c
index d08ce61811..02f5259e5e 100644
--- a/hw/openrisc/openrisc_sim.c
+++ b/hw/openrisc/openrisc_sim.c
@@ -134,6 +134,7 @@ static void openrisc_sim_init(MachineState *machine)
     int n;
     unsigned int smp_cpus = machine->smp.cpus;
 
+    assert(smp_cpus >= 1 && smp_cpus <= 2);
     for (n = 0; n < smp_cpus; n++) {
         cpu = OPENRISC_CPU(cpu_create(machine->cpu_type));
         if (cpu == NULL) {
---

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https://bugs.launchpad.net/bugs/1874073

Title:
  openrisc_sim.c:87:42: error: 'cpu_irqs[0]' may be used uninitialized
  in this function [-Werror=maybe-uninitialized]

Status in QEMU:
  New

Bug description:
  I see the warning since gcc10:

  static void openrisc_sim_init(MachineState *machine):
  ...
      qemu_irq *cpu_irqs[2];
  ...

  
      serial_mm_init(get_system_memory(), 0x90000000, 0, serial_irq,
                     115200, serial_hd(0), DEVICE_NATIVE_ENDIAN);

  I would initialize cpu_irqs[2] with {}.

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