[Qemu-devel] [PULL 1/3] hw/openrisc: Avoid using uninitialised variable 'entry'

[Jia Liu]

clang warns that cpu_openrisc_load_kernel() can use 'entry' uninitialized:

hw/openrisc/openrisc_sim.c:69:9: error: variable 'entry' is used uninitialized
whenever '&&' condition is false [-Werror,-Wsometimes-uninitialized]

    if (kernel_filename && !qtest_enabled()) {
        ^~~~~~~~~~~~~~~
hw/openrisc/openrisc_sim.c:91:19: note: uninitialized use occurs here
    cpu->env.pc = entry;
                  ^~~~~

Fix this by not attempting to change the CPU's starting PC unless
we actually loaded a kernel.

Signed-off-by: Peter Maydell <address@hidden>
Reviewed-by: Jia Liu <address@hidden>
---
 hw/openrisc/openrisc_sim.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/hw/openrisc/openrisc_sim.c b/hw/openrisc/openrisc_sim.c
index a08f27c..28fa41d 100644
--- a/hw/openrisc/openrisc_sim.c
+++ b/hw/openrisc/openrisc_sim.c
@@ -86,9 +86,8 @@ static void cpu_openrisc_load_kernel(ram_addr_t ram_size,
                     kernel_filename);
             exit(1);
         }
+        cpu->env.pc = entry;
     }
-
-    cpu->env.pc = entry;
 }
 
 static void openrisc_sim_init(QEMUMachineInitArgs *args)
-- 
1.7.12.4 (Apple Git-37)