runtime.Caller crashes on large inputs #176
Description
From the documentation I thought that runtime.Caller(frame) will
return false when it is not possible to obtain information - instead
it causes program to crash past call stack top :
package main
import (
"fmt";
"runtime";
"strings"
)
func main() {
foo()
}
func foo() {
bar()
}
func bar() {
for i := 0; ; i++ {
_, file, line, ok := runtime.Caller(i);
if ok {
path := strings.Split(file, "/", 0);
fmt.Printf("%s : %d\n", path[len(path)-1], line);
} else {
break;
}
}
}
results in
stacktrace.go : 19
stacktrace.go : 14
stacktrace.go : 10
asm.s : 81
proc.c : 135
Bus error
Also, Caller() doc says 'The argument is the number of stack frames to
ascend, with 1 identifying the the caller of Caller', while in fact,
it looks like 0 is the caller of Caller.
http://groups.google.com/group/golang-nuts/t/8626dabf2b80d453