Consider the simple Racket program -------------------- #lang racket (+ (read) (read)) -------------------- When this is compiled using raco, the executable produced works exactly as intended, reading two integers on standard input and printing their sum. However, when I run the C program -------------------- #include <unistd.h> int main() { execl("aplusb","aplusb",(char*)0); } -------------------- where "aplusb" is the name of the Racket program, it exits immediately with the errors: -------------------- with-input-from-file: expects type <path or string> as 1st argument, given: #f; other arguments were: #<procedure> === context === embedded-load -------------------- How can I fix this problem? I am using Racket v5.0.1 on Ubuntu 9.10 (i386).