[Solarsail]

One of the early PL/1 compilers IBM wrote in the 60's did something akin to this. It was a 'premium' feature, available in one of the more expensive compilers. Where it detected any error or wrong looking code, it would correct it. There's a story floating around somewhere on the net of one guy trying to use it... (Which I can't find at the moment.)

The first time he tried to compile with it, he used a program of roughly "Hello from PL/1". When he ran it, he got a division by zero error, because his string had been turned into an arithmetic expression. With the 1 turned into an I, which was then an unitialized variable, which then defaulted to 0.