Clarify the requirements for the Destination parameter of UnicodeStrToAsciiStr.

[mirror_edk2.git] / MdePkg / Include / Library / BaseLib.h

diff --git a/MdePkg/Include/Library/BaseLib.h b/MdePkg/Include/Library/BaseLib.h
index c74ea23a744697b4aab881a85ca0415895713048..6998171bd552259afdea8faeed15a4f61be88fbd 100644 (file)
--- a/MdePkg/Include/Library/BaseLib.h
+++ b/MdePkg/Include/Library/BaseLib.h
@@ -636,6 +636,9 @@ StrHexToUint64 (
   to the ASCII string Destination by copying the lower 8 bits of\r
   each Unicode character. It returns Destination.\r
 \r
+  The caller is responsible to make sure Destination points to a buffer with size\r
+  equal or greater than ((StrLen (Source) + 1) * sizeof (CHAR8)) in bytes.\r
+\r
   If any Unicode characters in Source contain non-zero value in\r
   the upper 8 bits, then ASSERT().\r
 \r