civodul pushed a commit to branch master
in repository guix.
commit ecb33b87aafd9e240c2cb351525814cb1bb5ceb1
Author: Ludovic Courtès <[email protected]>
Date: Thu Apr 25 00:43:42 2019 +0200
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'.
---
gnu/build/vm.scm | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/gnu/build/vm.scm b/gnu/build/vm.scm
index f295362..372cf63 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))
