alloc: posix_memalign does not set errno

We must set errno manually for die_errno() if posix_memalign fails
(cherry picked from commit 8c79cf794f6178b6978743af99d498ca0b449fb1)

1 files changed, 2 insertions, 0 deletions

diff --git a/alloc.c b/alloc.c
index 04bc789..5afcee2 100644
--- a/alloc.c
+++ b/alloc.c
@@ -73,6 +73,8 @@ void *mog_cachealign(size_t size)
         case 0: return ptr;
         case ENOMEM: mog_oom();
         }
+
+        errno = err; /* most likely EINVAL */
         die_errno("posix_memalign failed");
 }