-frewrite-includes bug in clang

test.sh

#!/bin/sh -x

LLVM_BIN=/usr/bin

cat <<EOF > test.c
#include <stdatomic.h>

int main(void)
{
    volatile atomic_long i = 0;
    return 0;
}
EOF

$LLVM_BIN/clang test.c -std=c11 -E -frewrite-includes > test.e.c
$LLVM_BIN/clang test.e.c -std=c11