Upstream: not yet, need to find a proper patch.
--- ./mednafen/snes/src/lib/nall/string/strl.hpp.orig	2020-04-05 13:30:05.865697614 +0200
+++ ./mednafen/snes/src/lib/nall/string/strl.hpp	2020-04-05 13:30:12.735686081 +0200
@@ -1,48 +0,0 @@
-#ifndef NALL_STRING_STRL_HPP
-#define NALL_STRING_STRL_HPP
-
-//strlcpy, strlcat based on OpenBSD implementation by Todd C. Miller
-
-//return = strlen(src)
-size_t strlcpy(char *dest, const char *src, size_t length) {
-  char *d = dest;
-  const char *s = src;
-  size_t n = length;
-
-  if(n) {
-    while(--n && (*d++ = *s++)); //copy as many bytes as possible, or until null terminator reached
-  }
-
-  if(!n) {
-    if(length) *d = 0;
-    while(*s++); //traverse rest of s, so that s - src == strlen(src)
-  }
-
-  return (s - src - 1); //return length of copied string, sans null terminator
-}
-
-//return = strlen(src) + min(length, strlen(dest))
-size_t strlcat(char *dest, const char *src, size_t length) {
-  char *d = dest;
-  const char *s = src;
-  size_t n = length;
-
-  while(n-- && *d) d++; //find end of dest
-  size_t dlength = d - dest;
-  n = length - dlength; //subtract length of dest from maximum string length
-
-  if(!n) return dlength + strlen(s);
-
-  while(*s) {
-    if(n != 1) {
-      *d++ = *s;
-      n--;
-    }
-    s++;
-  }
-  *d = 0;
-
-  return dlength + (s - src); //return length of resulting string, sans null terminator
-}
-
-#endif
--- ./mednafen/snes/src/lib/nall/string/base.hpp.orig	2020-04-05 13:25:44.896135748 +0200
+++ ./mednafen/snes/src/lib/nall/string/base.hpp	2020-04-05 13:25:57.799447417 +0200
@@ -34,8 +34,6 @@
 inline bool match(const char *pattern, const char *str);
 inline bool strint (const char *str, int &result);
 inline bool strmath(const char *str, int &result);
-inline size_t strlcpy(char *dest, const char *src, size_t length);
-inline size_t strlcat(char *dest, const char *src, size_t length);
 inline char* ltrim(char *str, const char *key = " ");
 inline char* rtrim(char *str, const char *key = " ");
 inline char* trim (char *str, const char *key = " ");