我有 gdb 無法正確打印變量的問題。簡單的程序是通過以下方式構建的：chmurson-osx:helloworld chmurson$ go build -gcflags '-N' start.go 然后 gdb 執(zhí)行：chmurson-osx:helloworld chmurson$ gdb start -d $GOROOTGNU gdb (GDB) 7.8Copyright (C) 2014 Free Software Foundation, Inc.License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>This is free software: you are free to change and redistribute it.There is NO WARRANTY, to the extent permitted by law. Type "show copying"and "show warranty" for details.This GDB was configured as "x86_64-apple-darwin14.0.0".Type "show configuration" for configuration details.For bug reporting instructions, please see:<http://www.gnu.org/software/gdb/bugs/>.Find the GDB manual and other documentation resources online at:<http://www.gnu.org/software/gdb/documentation/>.For help, type "help".Type "apropos word" to search for commands related to "word"...Reading symbols from start...done.warning: Missing auto-load scripts referenced in section .debug_gdb_scriptsof file /Users/chmurson/Dev/goprojects/misc/src/helloworld/startUse `info auto-load python-scripts [REGEXP]' to list them.(gdb) (gdb) source /usr/local/go/src/pkg/runtime/runtime-gdb.pyLoading Go Runtime support.這是我接下來要做的：(gdb) list1 package main2 3 import "fmt"4 5 func main() {6 x := "abc"7 i := 38 fmt.Println(i)9 fmt.Println(x)10 }(gdb) b 9Breakpoint 1 at 0x2106: file /Users/chmurson/Dev/goprojects/misc/src/helloworld/start.go, line 9.(gdb) runStarting program: /Users/chmurson/Dev/goprojects/misc/src/helloworld/start 3[New Thread 0x1113 of process 14039]Breakpoint 1, main.main () at /Users/chmurson/Dev/goprojects/misc/src/helloworld/start.go:99 fmt.Println(x)(gdb) p xPython Exception <type 'exceptions.OverflowError'> signed integer is greater than maximum: $1 = (gdb) p i$2 = 8725692800(gdb) 您可以看到在檢查 'p' 變量時存在 Python 異常，而在顯示 'i' 的值時完全不是 3。怎么了 ？
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TA貢獻1786條經驗 獲得超13個贊
添加到@AlexAtNet 的答案中，Go 1.2.x 之后的所有內容都破壞了 GDB 支持，因此要么使用 go 1.2.x 進行調試，要么使用 gccgo（請記住，gcc 4.8.x 支持 go 1.1，gcc 4.9.x 最高為 1.2） .
另一種選擇是使用您自己的跟蹤功能，雖然不漂亮，但它是目前 go 1.3+ 唯一真正的調試選項。
我個人使用這樣的東西進行調試：
var traceLock sync.Mutex
func trace(a ...interface{}) {
traceLock.Lock()
pc, f, ln, ok := runtime.Caller(1)
fn := ""
if ok {
fn = runtime.FuncForPC(pc).Name()
}
fmt.Printf("trace: %s %s:%d", fn, filepath.Base(f), ln)
if len(a) > 0 {
fmt.Println(append([]interface{}{": "}, a...)...)
}
traceLock.Unlock()
}
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