[Qemu-devel] [PATCH] hw/sparc/leon3: Don't call get_image_size() on a NULL pointer

[Peter Maydell]

get_image_size() doesn't handle being passed a NULL pointer, so
avoid doing that. Spotted by the clang ub sanitizer (which notices
the attempt to pass NULL to open()).

Signed-off-by: Peter Maydell <address@hidden>
---
 hw/sparc/leon3.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/hw/sparc/leon3.c b/hw/sparc/leon3.c
index dbae41f..6e16478 100644
--- a/hw/sparc/leon3.c
+++ b/hw/sparc/leon3.c
@@ -171,7 +171,11 @@ static void leon3_generic_hw_init(MachineState *machine)
     }
     filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);
 
-    bios_size = get_image_size(filename);
+    if (filename) {
+        bios_size = get_image_size(filename);
+    } else {
+        bios_size = -1;
+    }
 
     if (bios_size > prom_size) {
         fprintf(stderr, "qemu: could not load prom '%s': file too big\n",
-- 
2.7.4