崩溃在Ubuntu上

的strdup（）

我的C程序给出了段错误，当我尝试在Ubuntu.Here运行在堆栈trace.Any帮助表示赞赏崩溃在Ubuntu上

0 0x015383f1 in ??() from /lib/tls/i686/cmov/libc.so.6 
#1 0x01538075 in strdup() from /lib/tls/i686/cmov/libc.so.6 
#2 0x00c0a4af in cvtToString (ign=0xc10b80, target=0x83ba0a8, off=56, 
    source=0x0, setter=0xc044c3 <UxString_SetValue>) at xmlSerialPrimitives.c:28 
#3 0x00c09adb in _setValue (xs=0x83b3520, inst=0x83ba0a8 "\020", prop=0xc103dc, 
    value=0x0) at xmlDeserializer.c:214 
#4 0x00c09b71 in ctSetValue (xs=0x83b3520, property=0xc103dc, parent=0x83ba0a8, 
    val=0x0) at xmlDeserializer.c:237 
#5 0x00c0a1aa in _closeElement (xs=0x83b3520, element=0x83ba1a0) 
    at xmlDeserializer.c:419 
#6 0x00c0a3da in xmlDeserialize (xs=0x83b3520, xtr=0x83b6218) 
    at xmlDeserializer.c:533 
#7 0x00c0ab14 in xmlDeserializeFromFile (xs=0x83b3520, 
    file=0x83b34f0 "/usr/v/xlayout.xml") 
    at xmlSerializer.c:60 
#8 0x00c07280 in load_uxUserModel (
    file=0x83b34f0 "/usr/v/xlayout.xml", data=0xbffff4dc) 
    at UxUserModel.c:718 
#9 0x00c073d0 in UxUserModel_LoadUserModel (name=0x8148e60 "x.xml") 
    at UxUserModel.c:771 
#10 0x00bf7f5d in UxModelLoad (umif=0x8397c58, filename=0x8148e60 "x.xml")

下面是函数在那里崩溃

static int cvtToString(PCType * ign, void * target, int off, char * source, 
         void_f setter) 
    { 
     /* do we want to copy the string? */ 
     if (source && strncmp(source, "usermodel://", 12) == 0) 
       return 0; 
     source = strdup(source); 
     if (setter) 
       (*setter)(target, source); 
     else 
       (void) memcpy(target+off, &source, sizeof(char*)); 

     return 1; 
    }

来源

2012-04-30 G G

你的代码（和输入XML，如果存在的话）将帮助你和我们很多。 – MByD

用无效指针调用'strdup'？ –

'source = 0x0，'：用空指针调用strdup。 – wildplasser

if (!source || !strncmp(source, "usermodel://", 12)) 
      return 0;

BTW：这条线：

(void) memcpy(target+off, &source, sizeof(char*));

尝试对空指针执行算术运算。编译器应该（至少）抱怨。

来源

2012-04-30 20:28:09 wildplasser

崩溃在Ubuntu上

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