objcopy: also check --file-alignment option argument

... to be a power of two, just like --section-alignment does.

diff --git a/binutils/objcopy.c b/binutils/objcopy.c
index 5048648de0f71dcd82cbe262f47cc1285b6de307..31933e13b7af74617cb9f1de15e0d6d15624b18e 100644 (file)
--- a/binutils/objcopy.c
+++ b/binutils/objcopy.c
@@ -5943,6 +5943,11 @@ copy_main (int argc, char *argv[])
 
        case OPTION_FILE_ALIGNMENT:
          pe_file_alignment = parse_vma (optarg, "--file-alignment");
+         if (power_of_two (pe_file_alignment) == -1)
+           {
+             non_fatal (_("--file-alignment argument is not a power of two: %s - ignoring"), optarg);
+             pe_file_alignment = (bfd_vma) -1;
+           }
          break;
 
        case OPTION_HEAP: