6g allows use of unmade chans #497
Description
by akidan:
Did not find this listed on existing issues, apologies if I missed it...
What steps will reproduce the problem?
1. Write program.go:
package main
import "fmt"
func main() {
var a chan int
ok := a <- 1
fmt.Println(ok)
}
2.
6g -o _go_.6 program.go
6l -o program _go_.6
3.
./program.go
What is the expected output? What do you see instead?
Expected:
Compile-time error, due to use of unmade channel.
Actual:
SIGSEGV: segmentation violation
Faulting address: 0xc
pc: 0x1f7e0
runtime·chansend2+0x20 /Users/roberthencke/go/src/pkg/runtime/chan.c:399
runtime·chansend2(0x0, 0x0)
main·main+0x22 /Users/roberthencke/src/go/helloworld/program.go:7
main·main()
mainstart+0xf /Users/roberthencke/go/src/pkg/runtime/amd64/asm.s:54
mainstart()
goexit /Users/roberthencke/go/src/pkg/runtime/proc.c:136
goexit()
rax 0x0
rbx 0x26dee0
rcx 0x0
rdx 0x1
rdi 0x64
rsi 0x294090
rbp 0x26dee0
rsp 0x29cf48
r8 0xcc
r9 0x29cee0
r10 0x6c
r11 0x3ffa8
r12 0x1eb
r13 0x0
r14 0x5cec8
r15 0x29b000
rip 0x1f7e0
rflags 0x10206
cs 0x27
fs 0x0
gs 0x0
What is your $GOOS? $GOARCH?
GOOS = darwin
GOARCH = amd64
Which revision are you using? (hg identify)
3887d4d81bca release.2010-01-05/release