summaryrefslogtreecommitdiff
path: root/gnu/build/vm.scm
diff options
context:
space:
mode:
authorLudovic Courtès <ludo@gnu.org>2019-04-25 00:43:42 +0200
committerLudovic Courtès <ludo@gnu.org>2019-04-25 00:45:35 +0200
commitecb33b87aafd9e240c2cb351525814cb1bb5ceb1 (patch)
tree0620336c1f4214ed119da62c60885a40b4236fe6 /gnu/build/vm.scm
parente7c7b7332075fadbbea3a2e041e7290958ac2354 (diff)
vm: Adjust FAT serial number code to 32-bit Guile.
On 32-bit systems, 'string-hash' would raise an out-of-range exception when the second argument was 2^32. * gnu/build/vm.scm (make-iso9660-image): Pass 2^32 - 1 to 'string-hash'.
Diffstat (limited to 'gnu/build/vm.scm')
-rw-r--r--gnu/build/vm.scm6
1 files changed, 5 insertions, 1 deletions
diff --git a/gnu/build/vm.scm b/gnu/build/vm.scm
index f2953621ec..372cf63c68 100644
--- a/gnu/build/vm.scm
+++ b/gnu/build/vm.scm
@@ -473,8 +473,12 @@ GRUB configuration and OS-DRV as the stuff in it."
;; allows for deterministic builds.
(setenv "GRUB_FAT_SERIAL_NUMBER"
(number->string (if volume-uuid
+
+ ;; On 32-bit systems the 2nd argument must be
+ ;; lower than 2^32.
(string-hash (iso9660-uuid->string volume-uuid)
- (expt 2 32))
+ (- (expt 2 32) 1))
+
#x77777777)
16))