The code from gram.y that handles this looks like this in R-devel:
/* allow top-level placeholder */
for (SEXP a = CDR(rhs); a != R_NilValue; a = CDR(a))
if (CAR(a) == R_PlaceholderToken) {
if (TAG(a) == R_NilValue)
raiseParseError("
On 7/18/22 19:14, Avraham Adler wrote:
Hello.
According to my understanding of the changes in R-devel, the flag
-fno-optimize-sibling-calls should no longer be forced when compiling
R. Yet, as I compile R, revision 82603, from source on Windows
(Skylake-X server) I see the flag being passed (e
