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-rw-r--r--src/basic/util.h10
1 files changed, 10 insertions, 0 deletions
diff --git a/src/basic/util.h b/src/basic/util.h
index 76a06822b7..b7bad76212 100644
--- a/src/basic/util.h
+++ b/src/basic/util.h
@@ -104,6 +104,16 @@ static inline void qsort_safe(void *base, size_t nmemb, size_t size, comparison_
qsort(base, nmemb, size, compar);
}
+/**
+ * Normal memcpy requires src to be nonnull. We do nothing if n is 0.
+ */
+static inline void memcpy_safe(void *dst, const void *src, size_t n) {
+ if (n == 0)
+ return;
+ assert(src);
+ memcpy(dst, src, n);
+}
+
int on_ac_power(void);
#define memzero(x,l) (memset((x), 0, (l)))