print error return trace if execv:ing qemu errors

1 files changed, 3 insertions, 2 deletions

diff --git a/src/main.zig b/src/main.zig
index 5ee36da..5eda854 100644
--- a/src/main.zig
+++ b/src/main.zig
@@ -73,13 +73,14 @@ pub fn main() !void {
     if (run) {
         out_file.close();
 
-        std.debug.print("{}\n", .{std.process.execv(
+        const err = std.process.execv(
             allocator,
             if (target.cpu.arch == .riscv64 and target.os.tag == .linux)
                 &.{out_path}
             else
                 &.{ "qemu-riscv64", out_path.? },
-        )});
+        );
+        std.debug.print("{}\n{any}\n", .{err, @errorReturnTrace()});
     }
 }