rustc fails whlie linking files if the source file path begins with ./ or ../

[msullivan]

sully@anansi:~/src/rust/build [master]$ s1 ./stage1/rustc ./test.rs 
gcc: .o: No such file or directory
:0:0:0:0: error: linking with gcc failed with code 256
:0:0:0:0: note: gcc arguments: -L./stage1/lib -Lrt -lrustrt ./stage1/lib/glue.o -m32 -o  .o -lm ./stage1/lib/main.o
:0:0:0:0: error: aborting due to previous errors

(s1 is my shell function that sets up the environment).

Doing "../build/test.rs" also fails. Doing "test.rs" works. If I have a file in another directory, "foo/test.rs" works but "./foo/test.rs" doesn't work.

[msullivan]

In fact, it fails if a . appears anywhere in the path.