[PATCH V6 1/1] MdePkg: Fix SafeString performing assertions on runtime checks

["Vitaly Cheptsov" <cheptsov@ispras.ru>]

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=2054

Runtime checks returned via status return code should not work as
assertions to permit parsing not trusted data with SafeString
interfaces.

CC: Andrew Fish <afish@apple.com>
CC: Ard Biesheuvel <ard.biesheuvel@linaro.org>
CC: Bret Barkelew <bret.barkelew@microsoft.com>
CC: Brian J. Johnson <brian.johnson@hpe.com>
CC: Chasel Chiu <chasel.chiu@intel.com>
CC: Jordan Justen <jordan.l.justen@intel.com>
CC: Laszlo Ersek <lersek@redhat.com>
CC: Leif Lindholm <leif@nuviainc.com>
CC: Liming Gao <liming.gao@intel.com>
CC: Marvin Häuser <mhaeuser@outlook.de>
CC: Mike Kinney <michael.d.kinney@intel.com>
CC: Vincent Zimmer <vincent.zimmer@intel.com>
CC: Zhichao Gao <zhichao.gao@intel.com>
Signed-off-by: Vitaly Cheptsov <vit9696@protonmail.com>
---
 MdePkg/Include/Library/BaseLib.h    | 120 ++------------------
 MdePkg/Library/BaseLib/SafeString.c |  80 -------------
 2 files changed, 7 insertions(+), 193 deletions(-)

diff --git a/MdePkg/Include/Library/BaseLib.h b/MdePkg/Include/Library/BaseLib.h
index ecadff8b23..62dc3151bc 100644
--- a/MdePkg/Include/Library/BaseLib.h
+++ b/MdePkg/Include/Library/BaseLib.h
@@ -189,7 +189,6 @@ StrnSizeS (
 
   If Destination is not aligned on a 16-bit boundary, then ASSERT().
   If Source is not aligned on a 16-bit boundary, then ASSERT().
-  If an error would be returned, then the function will also ASSERT().
 
   If an error is returned, then the Destination is unmodified.
 
@@ -225,7 +224,6 @@ StrCpyS (
 
   If Length > 0 and Destination is not aligned on a 16-bit boundary, then ASSERT().
   If Length > 0 and Source is not aligned on a 16-bit boundary, then ASSERT().
-  If an error would be returned, then the function will also ASSERT().
 
   If an error is returned, then the Destination is unmodified.
 
@@ -263,7 +261,6 @@ StrnCpyS (
 
   If Destination is not aligned on a 16-bit boundary, then ASSERT().
   If Source is not aligned on a 16-bit boundary, then ASSERT().
-  If an error would be returned, then the function will also ASSERT().
 
   If an error is returned, then the Destination is unmodified.
 
@@ -303,7 +300,6 @@ StrCatS (
 
   If Destination is not aligned on a 16-bit boundary, then ASSERT().
   If Source is not aligned on a 16-bit boundary, then ASSERT().
-  If an error would be returned, then the function will also ASSERT().
 
   If an error is returned, then the Destination is unmodified.
 
@@ -350,12 +346,7 @@ StrnCatS (
   be ignored. Then, the function stops at the first character that is a not a
   valid decimal character or a Null-terminator, whichever one comes first.
 
-  If String is NULL, then ASSERT().
-  If Data is NULL, then ASSERT().
   If String is not aligned in a 16-bit boundary, then ASSERT().
-  If PcdMaximumUnicodeStringLength is not zero, and String contains more than
-  PcdMaximumUnicodeStringLength Unicode characters, not including the
-  Null-terminator, then ASSERT().
 
   If String has no valid decimal digits in the above format, then 0 is stored
   at the location pointed to by Data.
@@ -406,12 +397,7 @@ StrDecimalToUintnS (
   be ignored. Then, the function stops at the first character that is a not a
   valid decimal character or a Null-terminator, whichever one comes first.
 
-  If String is NULL, then ASSERT().
-  If Data is NULL, then ASSERT().
   If String is not aligned in a 16-bit boundary, then ASSERT().
-  If PcdMaximumUnicodeStringLength is not zero, and String contains more than
-  PcdMaximumUnicodeStringLength Unicode characters, not including the
-  Null-terminator, then ASSERT().
 
   If String has no valid decimal digits in the above format, then 0 is stored
   at the location pointed to by Data.
@@ -467,12 +453,7 @@ StrDecimalToUint64S (
   the first character that is a not a valid hexadecimal character or NULL,
   whichever one comes first.
 
-  If String is NULL, then ASSERT().
-  If Data is NULL, then ASSERT().
   If String is not aligned in a 16-bit boundary, then ASSERT().
-  If PcdMaximumUnicodeStringLength is not zero, and String contains more than
-  PcdMaximumUnicodeStringLength Unicode characters, not including the
-  Null-terminator, then ASSERT().
 
   If String has no valid hexadecimal digits in the above format, then 0 is
   stored at the location pointed to by Data.
@@ -528,12 +509,7 @@ StrHexToUintnS (
   the first character that is a not a valid hexadecimal character or NULL,
   whichever one comes first.
 
-  If String is NULL, then ASSERT().
-  If Data is NULL, then ASSERT().
   If String is not aligned in a 16-bit boundary, then ASSERT().
-  If PcdMaximumUnicodeStringLength is not zero, and String contains more than
-  PcdMaximumUnicodeStringLength Unicode characters, not including the
-  Null-terminator, then ASSERT().
 
   If String has no valid hexadecimal digits in the above format, then 0 is
   stored at the location pointed to by Data.
@@ -622,8 +598,6 @@ AsciiStrnSizeS (
 
   This function is similar as strcpy_s defined in C11.
 
-  If an error would be returned, then the function will also ASSERT().
-
   If an error is returned, then the Destination is unmodified.
 
   @param  Destination              A pointer to a Null-terminated Ascii string.
@@ -656,8 +630,6 @@ AsciiStrCpyS (
 
   This function is similar as strncpy_s defined in C11.
 
-  If an error would be returned, then the function will also ASSERT().
-
   If an error is returned, then the Destination is unmodified.
 
   @param  Destination              A pointer to a Null-terminated Ascii string.
@@ -692,8 +664,6 @@ AsciiStrnCpyS (
 
   This function is similar as strcat_s defined in C11.
 
-  If an error would be returned, then the function will also ASSERT().
-
   If an error is returned, then the Destination is unmodified.
 
   @param  Destination              A pointer to a Null-terminated Ascii string.
@@ -730,8 +700,6 @@ AsciiStrCatS (
 
   This function is similar as strncat_s defined in C11.
 
-  If an error would be returned, then the function will also ASSERT().
-
   If an error is returned, then the Destination is unmodified.
 
   @param  Destination              A pointer to a Null-terminated Ascii string.
@@ -777,12 +745,6 @@ AsciiStrnCatS (
   be ignored. Then, the function stops at the first character that is a not a
   valid decimal character or a Null-terminator, whichever one comes first.
 
-  If String is NULL, then ASSERT().
-  If Data is NULL, then ASSERT().
-  If PcdMaximumAsciiStringLength is not zero, and String contains more than
-  PcdMaximumAsciiStringLength Ascii characters, not including the
-  Null-terminator, then ASSERT().
-
   If String has no valid decimal digits in the above format, then 0 is stored
   at the location pointed to by Data.
   If the number represented by String exceeds the range defined by UINTN, then
@@ -832,12 +794,6 @@ AsciiStrDecimalToUintnS (
   be ignored. Then, the function stops at the first character that is a not a
   valid decimal character or a Null-terminator, whichever one comes first.
 
-  If String is NULL, then ASSERT().
-  If Data is NULL, then ASSERT().
-  If PcdMaximumAsciiStringLength is not zero, and String contains more than
-  PcdMaximumAsciiStringLength Ascii characters, not including the
-  Null-terminator, then ASSERT().
-
   If String has no valid decimal digits in the above format, then 0 is stored
   at the location pointed to by Data.
   If the number represented by String exceeds the range defined by UINT64, then
@@ -891,12 +847,6 @@ AsciiStrDecimalToUint64S (
   character that is a not a valid hexadecimal character or Null-terminator,
   whichever on comes first.
 
-  If String is NULL, then ASSERT().
-  If Data is NULL, then ASSERT().
-  If PcdMaximumAsciiStringLength is not zero, and String contains more than
-  PcdMaximumAsciiStringLength Ascii characters, not including the
-  Null-terminator, then ASSERT().
-
   If String has no valid hexadecimal digits in the above format, then 0 is
   stored at the location pointed to by Data.
   If the number represented by String exceeds the range defined by UINTN, then
@@ -950,12 +900,6 @@ AsciiStrHexToUintnS (
   character that is a not a valid hexadecimal character or Null-terminator,
   whichever on comes first.
 
-  If String is NULL, then ASSERT().
-  If Data is NULL, then ASSERT().
-  If PcdMaximumAsciiStringLength is not zero, and String contains more than
-  PcdMaximumAsciiStringLength Ascii characters, not including the
-  Null-terminator, then ASSERT().
-
   If String has no valid hexadecimal digits in the above format, then 0 is
   stored at the location pointed to by Data.
   If the number represented by String exceeds the range defined by UINT64, then
@@ -1506,16 +1450,8 @@ StrHexToUint64 (
   "::" can be used to compress one or more groups of X when X contains only 0.
   The "::" can only appear once in the String.
 
-  If String is NULL, then ASSERT().
-
-  If Address is NULL, then ASSERT().
-
   If String is not aligned in a 16-bit boundary, then ASSERT().
 
-  If PcdMaximumUnicodeStringLength is not zero, and String contains more than
-  PcdMaximumUnicodeStringLength Unicode characters, not including the
-  Null-terminator, then ASSERT().
-
   If EndPointer is not NULL and Address is translated from String, a pointer
   to the character that stopped the scan is stored at the location pointed to
   by EndPointer.
@@ -1567,15 +1503,10 @@ StrToIpv6Address (
   When /P is in the String, the function stops at the first character that is not
   a valid decimal digit character after P is converted.
 
-  If String is NULL, then ASSERT().
-
-  If Address is NULL, then ASSERT().
-
   If String is not aligned in a 16-bit boundary, then ASSERT().
 
   If PcdMaximumUnicodeStringLength is not zero, and String contains more than
   PcdMaximumUnicodeStringLength Unicode characters, not including the
-  Null-terminator, then ASSERT().
 
   If EndPointer is not NULL and Address is translated from String, a pointer
   to the character that stopped the scan is stored at the location pointed to
@@ -1640,8 +1571,6 @@ StrToIpv4Address (
                   oo          Data4[48:55]
                   pp          Data4[56:63]
 
-  If String is NULL, then ASSERT().
-  If Guid is NULL, then ASSERT().
   If String is not aligned in a 16-bit boundary, then ASSERT().
 
   @param  String                   Pointer to a Null-terminated Unicode string.
@@ -1676,17 +1605,6 @@ StrToGuid (
 
   If String is not aligned in a 16-bit boundary, then ASSERT().
 
-  If String is NULL, then ASSERT().
-
-  If Buffer is NULL, then ASSERT().
-
-  If Length is not multiple of 2, then ASSERT().
-
-  If PcdMaximumUnicodeStringLength is not zero and Length is greater than
-  PcdMaximumUnicodeStringLength, then ASSERT().
-
-  If MaxBufferSize is less than (Length / 2), then ASSERT().
-
   @param  String                   Pointer to a Null-terminated Unicode string.
   @param  Length                   The number of Unicode characters to decode.
   @param  Buffer                   Pointer to the converted bytes array.
@@ -1777,7 +1695,6 @@ UnicodeStrToAsciiStr (
   the upper 8 bits, then ASSERT().
 
   If Source is not aligned on a 16-bit boundary, then ASSERT().
-  If an error would be returned, then the function will also ASSERT().
 
   If an error is returned, then the Destination is unmodified.
 
@@ -1818,22 +1735,23 @@ UnicodeStrToAsciiStrS (
   bits of each Unicode character. The function terminates the Ascii string
   Destination by appending a Null-terminator character at the end.
 
-  The caller is responsible to make sure Destination points to a buffer with size
-  equal or greater than ((StrLen (Source) + 1) * sizeof (CHAR8)) in bytes.
+  The caller is responsible to make sure Destination points to a buffer with
+  size not smaller than ((MIN(StrLen(Source), Length) + 1) * sizeof (CHAR8))
+  in bytes.
 
   If any Unicode characters in Source contain non-zero value in the upper 8
   bits, then ASSERT().
   If Source is not aligned on a 16-bit boundary, then ASSERT().
-  If an error would be returned, then the function will also ASSERT().
 
-  If an error is returned, then the Destination is unmodified.
+  If an error is returned, then Destination and DestinationLength are
+  unmodified.
 
   @param  Source             The pointer to a Null-terminated Unicode string.
   @param  Length             The maximum number of Unicode characters to
                              convert.
   @param  Destination        The pointer to a Null-terminated Ascii string.
-  @param  DestMax            The maximum number of Destination Ascii
-                             char, including terminating null char.
+  @param  DestMax            The maximum number of Destination Ascii char,
+                             including terminating null char.
   @param  DestinationLength  The number of Unicode characters converted.
 
   @retval RETURN_SUCCESS            String is converted.
@@ -2388,10 +2306,6 @@ AsciiStrHexToUint64 (
   "::" can be used to compress one or more groups of X when X contains only 0.
   The "::" can only appear once in the String.
 
-  If String is NULL, then ASSERT().
-
-  If Address is NULL, then ASSERT().
-
   If EndPointer is not NULL and Address is translated from String, a pointer
   to the character that stopped the scan is stored at the location pointed to
   by EndPointer.
@@ -2443,10 +2357,6 @@ AsciiStrToIpv6Address (
   When /P is in the String, the function stops at the first character that is not
   a valid decimal digit character after P is converted.
 
-  If String is NULL, then ASSERT().
-
-  If Address is NULL, then ASSERT().
-
   If EndPointer is not NULL and Address is translated from String, a pointer
   to the character that stopped the scan is stored at the location pointed to
   by EndPointer.
@@ -2508,9 +2418,6 @@ AsciiStrToIpv4Address (
                   oo          Data4[48:55]
                   pp          Data4[56:63]
 
-  If String is NULL, then ASSERT().
-  If Guid is NULL, then ASSERT().
-
   @param  String                   Pointer to a Null-terminated ASCII string.
   @param  Guid                     Pointer to the converted GUID.
 
@@ -2541,17 +2448,6 @@ AsciiStrToGuid (
   decoding stops after Length of characters and outputs Buffer containing
   (Length / 2) bytes.
 
-  If String is NULL, then ASSERT().
-
-  If Buffer is NULL, then ASSERT().
-
-  If Length is not multiple of 2, then ASSERT().
-
-  If PcdMaximumAsciiStringLength is not zero and Length is greater than
-  PcdMaximumAsciiStringLength, then ASSERT().
-
-  If MaxBufferSize is less than (Length / 2), then ASSERT().
-
   @param  String                   Pointer to a Null-terminated ASCII string.
   @param  Length                   The number of ASCII characters to decode.
   @param  Buffer                   Pointer to the converted bytes array.
@@ -2632,7 +2528,6 @@ AsciiStrToUnicodeStr (
   equal or greater than ((AsciiStrLen (Source) + 1) * sizeof (CHAR16)) in bytes.
 
   If Destination is not aligned on a 16-bit boundary, then ASSERT().
-  If an error would be returned, then the function will also ASSERT().
 
   If an error is returned, then the Destination is unmodified.
 
@@ -2678,7 +2573,6 @@ AsciiStrToUnicodeStrS (
   ((MIN(AsciiStrLen(Source), Length) + 1) * sizeof (CHAR8)) in bytes.
 
   If Destination is not aligned on a 16-bit boundary, then ASSERT().
-  If an error would be returned, then the function will also ASSERT().
 
   If an error is returned, then Destination and DestinationLength are
   unmodified.
diff --git a/MdePkg/Library/BaseLib/SafeString.c b/MdePkg/Library/BaseLib/SafeString.c
index 7dc03d2caa..1db42abb05 100644
--- a/MdePkg/Library/BaseLib/SafeString.c
+++ b/MdePkg/Library/BaseLib/SafeString.c
@@ -14,7 +14,6 @@
 
 #define SAFE_STRING_CONSTRAINT_CHECK(Expression, Status)  \
   do { \
-    ASSERT (Expression); \
     if (!(Expression)) { \
       return Status; \
     } \
@@ -197,7 +196,6 @@ StrnSizeS (
 
   If Destination is not aligned on a 16-bit boundary, then ASSERT().
   If Source is not aligned on a 16-bit boundary, then ASSERT().
-  If an error would be returned, then the function will also ASSERT().
 
   If an error is returned, then the Destination is unmodified.
 
@@ -279,7 +277,6 @@ StrCpyS (
 
   If Length > 0 and Destination is not aligned on a 16-bit boundary, then ASSERT().
   If Length > 0 and Source is not aligned on a 16-bit boundary, then ASSERT().
-  If an error would be returned, then the function will also ASSERT().
 
   If an error is returned, then the Destination is unmodified.
 
@@ -372,7 +369,6 @@ StrnCpyS (
 
   If Destination is not aligned on a 16-bit boundary, then ASSERT().
   If Source is not aligned on a 16-bit boundary, then ASSERT().
-  If an error would be returned, then the function will also ASSERT().
 
   If an error is returned, then the Destination is unmodified.
 
@@ -473,7 +469,6 @@ StrCatS (
 
   If Destination is not aligned on a 16-bit boundary, then ASSERT().
   If Source is not aligned on a 16-bit boundary, then ASSERT().
-  If an error would be returned, then the function will also ASSERT().
 
   If an error is returned, then the Destination is unmodified.
 
@@ -590,12 +585,7 @@ StrnCatS (
   be ignored. Then, the function stops at the first character that is a not a
   valid decimal character or a Null-terminator, whichever one comes first.
 
-  If String is NULL, then ASSERT().
-  If Data is NULL, then ASSERT().
   If String is not aligned in a 16-bit boundary, then ASSERT().
-  If PcdMaximumUnicodeStringLength is not zero, and String contains more than
-  PcdMaximumUnicodeStringLength Unicode characters, not including the
-  Null-terminator, then ASSERT().
 
   If String has no valid decimal digits in the above format, then 0 is stored
   at the location pointed to by Data.
@@ -705,12 +695,7 @@ StrDecimalToUintnS (
   be ignored. Then, the function stops at the first character that is a not a
   valid decimal character or a Null-terminator, whichever one comes first.
 
-  If String is NULL, then ASSERT().
-  If Data is NULL, then ASSERT().
   If String is not aligned in a 16-bit boundary, then ASSERT().
-  If PcdMaximumUnicodeStringLength is not zero, and String contains more than
-  PcdMaximumUnicodeStringLength Unicode characters, not including the
-  Null-terminator, then ASSERT().
 
   If String has no valid decimal digits in the above format, then 0 is stored
   at the location pointed to by Data.
@@ -825,12 +810,7 @@ StrDecimalToUint64S (
   the first character that is a not a valid hexadecimal character or NULL,
   whichever one comes first.
 
-  If String is NULL, then ASSERT().
-  If Data is NULL, then ASSERT().
   If String is not aligned in a 16-bit boundary, then ASSERT().
-  If PcdMaximumUnicodeStringLength is not zero, and String contains more than
-  PcdMaximumUnicodeStringLength Unicode characters, not including the
-  Null-terminator, then ASSERT().
 
   If String has no valid hexadecimal digits in the above format, then 0 is
   stored at the location pointed to by Data.
@@ -956,12 +936,7 @@ StrHexToUintnS (
   the first character that is a not a valid hexadecimal character or NULL,
   whichever one comes first.
 
-  If String is NULL, then ASSERT().
-  If Data is NULL, then ASSERT().
   If String is not aligned in a 16-bit boundary, then ASSERT().
-  If PcdMaximumUnicodeStringLength is not zero, and String contains more than
-  PcdMaximumUnicodeStringLength Unicode characters, not including the
-  Null-terminator, then ASSERT().
 
   If String has no valid hexadecimal digits in the above format, then 0 is
   stored at the location pointed to by Data.
@@ -1856,8 +1831,6 @@ AsciiStrCpyS (
 
   This function is similar as strncpy_s defined in C11.
 
-  If an error would be returned, then the function will also ASSERT().
-
   If an error is returned, then the Destination is unmodified.
 
   @param  Destination              A pointer to a Null-terminated Ascii string.
@@ -1944,8 +1917,6 @@ AsciiStrnCpyS (
 
   This function is similar as strcat_s defined in C11.
 
-  If an error would be returned, then the function will also ASSERT().
-
   If an error is returned, then the Destination is unmodified.
 
   @param  Destination              A pointer to a Null-terminated Ascii string.
@@ -2040,8 +2011,6 @@ AsciiStrCatS (
 
   This function is similar as strncat_s defined in C11.
 
-  If an error would be returned, then the function will also ASSERT().
-
   If an error is returned, then the Destination is unmodified.
 
   @param  Destination              A pointer to a Null-terminated Ascii string.
@@ -2154,12 +2123,6 @@ AsciiStrnCatS (
   be ignored. Then, the function stops at the first character that is a not a
   valid decimal character or a Null-terminator, whichever one comes first.
 
-  If String is NULL, then ASSERT().
-  If Data is NULL, then ASSERT().
-  If PcdMaximumAsciiStringLength is not zero, and String contains more than
-  PcdMaximumAsciiStringLength Ascii characters, not including the
-  Null-terminator, then ASSERT().
-
   If String has no valid decimal digits in the above format, then 0 is stored
   at the location pointed to by Data.
   If the number represented by String exceeds the range defined by UINTN, then
@@ -2266,12 +2229,6 @@ AsciiStrDecimalToUintnS (
   be ignored. Then, the function stops at the first character that is a not a
   valid decimal character or a Null-terminator, whichever one comes first.
 
-  If String is NULL, then ASSERT().
-  If Data is NULL, then ASSERT().
-  If PcdMaximumAsciiStringLength is not zero, and String contains more than
-  PcdMaximumAsciiStringLength Ascii characters, not including the
-  Null-terminator, then ASSERT().
-
   If String has no valid decimal digits in the above format, then 0 is stored
   at the location pointed to by Data.
   If the number represented by String exceeds the range defined by UINT64, then
@@ -2382,12 +2339,6 @@ AsciiStrDecimalToUint64S (
   character that is a not a valid hexadecimal character or Null-terminator,
   whichever on comes first.
 
-  If String is NULL, then ASSERT().
-  If Data is NULL, then ASSERT().
-  If PcdMaximumAsciiStringLength is not zero, and String contains more than
-  PcdMaximumAsciiStringLength Ascii characters, not including the
-  Null-terminator, then ASSERT().
-
   If String has no valid hexadecimal digits in the above format, then 0 is
   stored at the location pointed to by Data.
   If the number represented by String exceeds the range defined by UINTN, then
@@ -2509,12 +2460,6 @@ AsciiStrHexToUintnS (
   character that is a not a valid hexadecimal character or Null-terminator,
   whichever on comes first.
 
-  If String is NULL, then ASSERT().
-  If Data is NULL, then ASSERT().
-  If PcdMaximumAsciiStringLength is not zero, and String contains more than
-  PcdMaximumAsciiStringLength Ascii characters, not including the
-  Null-terminator, then ASSERT().
-
   If String has no valid hexadecimal digits in the above format, then 0 is
   stored at the location pointed to by Data.
   If the number represented by String exceeds the range defined by UINT64, then
@@ -2635,7 +2580,6 @@ AsciiStrHexToUint64S (
   the upper 8 bits, then ASSERT().
 
   If Source is not aligned on a 16-bit boundary, then ASSERT().
-  If an error would be returned, then the function will also ASSERT().
 
   If an error is returned, then the Destination is unmodified.
 
@@ -2735,7 +2679,6 @@ UnicodeStrToAsciiStrS (
   If any Unicode characters in Source contain non-zero value in the upper 8
   bits, then ASSERT().
   If Source is not aligned on a 16-bit boundary, then ASSERT().
-  If an error would be returned, then the function will also ASSERT().
 
   If an error is returned, then Destination and DestinationLength are
   unmodified.
@@ -2948,7 +2891,6 @@ AsciiStrToUnicodeStrS (
   ((MIN(AsciiStrLen(Source), Length) + 1) * sizeof (CHAR8)) in bytes.
 
   If Destination is not aligned on a 16-bit boundary, then ASSERT().
-  If an error would be returned, then the function will also ASSERT().
 
   If an error is returned, then Destination and DestinationLength are
   unmodified.
@@ -3072,10 +3014,6 @@ AsciiStrnToUnicodeStrS (
   "::" can be used to compress one or more groups of X when X contains only 0.
   The "::" can only appear once in the String.
 
-  If String is NULL, then ASSERT().
-
-  If Address is NULL, then ASSERT().
-
   If EndPointer is not NULL and Address is translated from String, a pointer
   to the character that stopped the scan is stored at the location pointed to
   by EndPointer.
@@ -3291,10 +3229,6 @@ AsciiStrToIpv6Address (
   When /P is in the String, the function stops at the first character that is not
   a valid decimal digit character after P is converted.
 
-  If String is NULL, then ASSERT().
-
-  If Address is NULL, then ASSERT().
-
   If EndPointer is not NULL and Address is translated from String, a pointer
   to the character that stopped the scan is stored at the location pointed to
   by EndPointer.
@@ -3448,9 +3382,6 @@ AsciiStrToIpv4Address (
                   oo          Data4[48:55]
                   pp          Data4[56:63]
 
-  If String is NULL, then ASSERT().
-  If Guid is NULL, then ASSERT().
-
   @param  String                   Pointer to a Null-terminated ASCII string.
   @param  Guid                     Pointer to the converted GUID.
 
@@ -3550,17 +3481,6 @@ AsciiStrToGuid (
   decoding stops after Length of characters and outputs Buffer containing
   (Length / 2) bytes.
 
-  If String is NULL, then ASSERT().
-
-  If Buffer is NULL, then ASSERT().
-
-  If Length is not multiple of 2, then ASSERT().
-
-  If PcdMaximumAsciiStringLength is not zero and Length is greater than
-  PcdMaximumAsciiStringLength, then ASSERT().
-
-  If MaxBufferSize is less than (Length / 2), then ASSERT().
-
   @param  String                   Pointer to a Null-terminated ASCII string.
   @param  Length                   The number of ASCII characters to decode.
   @param  Buffer                   Pointer to the converted bytes array.
-- 
2.24.2 (Apple Git-127)