Re: [PATCH v2] random: vDSO: Avoid call to memset() when zeroing reserved in __cvdso_getrandom_data()

On Sep 25 2026, Nathan Chancellor wrote:

+#if __has_builtin(__builtin_memset_inline)
+#define memset_inline(dst, value, size) __builtin_memset_inline(dst, value, size)
+#elif IS_ENABLED(CONFIG_CC_HAS_OPT_INLINE_MEMSET)
+#define memset_inline(dst, value, size) __builtin_memset(dst, value, size)
+#else
+static inline void *memset_inline(void *dst, int value, size_t size)
+{
+	char *d = dst;
+
+	while (size--)
+		*d++ = value;
+
+	return d;
+}
+#endif
+

memset actually returns the original pointer, not the incremented one.
Nothing uses the return value of memset_inline here, but it is
confusing.

-- 
Andreas Schwab, schwab@linux-m68k.org
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