cmd/gc: Slice access of const causes strange string errors (Bug introduced in go1.3, doesn't happen in go <= 1.2) #8325
Description
by psnim2000:
What does 'go version' print? go version go1.3 darwin/amd64 (first discovered in go version go1.3 linux/amd64) What steps reproduce the problem? If possible, include a link to a program on play.golang.org. http://play.golang.org/p/RwqaHkITff What happened? See attached program. If you run this program on go1.3, you will get something like. Hello, playground PLCM7w9WX0F4Fs9Yz9.0699t A5 If you run this program on go1.2, you will get something like Hello, playground PLCM2IE95QPT6ZLUAX218417FLX3449NEJ5D What should have happened instead? The code shouldn't return any characters after [A-Z0-9] If you notice the output under go1.3, the value outside of [A-Z0-9] shouldn't be possible. I'm unsure if the output value is even valid UTF-8. Please provide any additional information below. This error was uncovered after upgrading a service to go1.3. We tested the function with go1 and go1.2, and the problem doesn't occur.