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-rw-r--r--lib/vsprintf.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/vsprintf.c b/lib/vsprintf.c
index 7369745..a0b5f15 100644
--- a/lib/vsprintf.c
+++ b/lib/vsprintf.c
@@ -1297,6 +1297,8 @@ qualifier:
* case.
* %n is ignored
*
+ * ** Please update Documentation/printk-formats.txt when making changes **
+ *
* The return value is the number of characters which would
* be generated for the given input, excluding the trailing
* '\0', as per ISO C99. If you want to have the exact
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