http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52952
--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-05-22
08:29:08 UTC ---
The format string could be even something like
void f() {
__builtin_printf(
u8R"abcd(%.)abcd"
"*d");
}
So, the question is, if we have a way to find from the source_location on the
ADDR_EXPR around STRING_CST the original non-concatenated tokens, and given
index into the (possibly) translated STRING_CST redo the lexing of those
tokens, looking at which byte in the source tokens maps to that offset in the
STRING_CST.
