gnu: datefudge: Fix compilation against libc 2.31.

* gnu/packages/patches/datefudge-gettimeofday.patch: New file.
* gnu/local.mk (dist_patch_DATA): Add it.
* gnu/packages/time.scm (datefudge)[source] Use it.

1 files changed, 13 insertions, 0 deletions

diff --git a/gnu/packages/patches/datefudge-gettimeofday.patch b/gnu/packages/patches/datefudge-gettimeofday.patch
new file mode 100644
index 0000000000..11c7640869
--- /dev/null
+++ b/gnu/packages/patches/datefudge-gettimeofday.patch
@@ -0,0 +1,13 @@
+Add the 'restrict' qualifier to match the 'gettimeofday' declaration found
+in glibc 2.31.
+
+--- datefudge-1.23/datefudge.c	2020-02-17 22:35:21.343341725 +0100
++++ datefudge-1.23/datefudge.c	2020-02-17 22:35:49.619117874 +0100
+@@ -78,6 +78,6 @@
+     return 0;
+ }
+ 
+-int gettimeofday(struct timeval *x, struct timezone *y) {
++int gettimeofday(struct timeval *restrict x, void *restrict y) {
+     return __gettimeofday(x,y);
+ }