First off no. Second, is their really going to be a performance gain from this. I wouldn't expect static strings to be converted very often. And last I will copy and past a comment from the source code:
198 /+ Unfortunately, this isn't reliable. 199 We could make this work if string literals are put 200 in read-only memory and we test if s[] is pointing into 201 that. 202 203 /* Peek past end of s[], if it's 0, no conversion necessary. 204 * Note that the compiler will put a 0 past the end of static 205 * strings, and the storage allocator will put a 0 past the end 206 * of newly allocated char[]'s. 207 */ 208 char* p = &s[0] + s.length; 209 if (*p == 0) 210 return s; 211 +/
