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解决QTCreator在Debug时无法显示std::string类型的问题

news 2025/7/13 0:24:42

环境：

操作系统：Ubuntu 20.04.6 LTS

QT版本：Qt Creator 4.11.0

问题：

Debug时，无法显示std::string类型的值，如下图：

解决方法：

修改/usr/share/qtcreator/debugger/stdtypes.py文件：

原代码：
def qdumpHelper_std__string(d, value, charType, format):if d.isQnxTarget():qdumpHelper__std__string__QNX(d, value, charType, format)returnif d.isMsvcTarget():qdumpHelper__std__string__MSVC(d, value, charType, format)returndata = value.extractPointer()# We can't lookup the std::string::_Rep type without crashing LLDB,# so hard-code assumption on member position# struct { size_type _M_length, size_type _M_capacity, int _M_refcount; }(size, alloc, refcount) = d.split("ppp", data - 3 * d.ptrSize())refcount = refcount & 0xffffffffd.check(refcount >= -1) # Can be -1 according to docs.d.check(0 <= size and size <= alloc and alloc <= 100*1000*1000)d.putCharArrayHelper(data, size, charType, format)修改为：
def qdumpHelper_std__string(d, value, charType, format):if d.isQnxTarget():qdumpHelper__std__string__QNX(d, value, charType, format)returnif d.isMsvcTarget():qdumpHelper__std__string__MSVC(d, value, charType, format)returndata = value.extractPointer()# We can't lookup the std::string::_Rep type without crashing LLDB,# so hard-code assumption on member position# struct { size_type _M_length, size_type _M_capacity, int _M_refcount; }(size, alloc, refcount) = d.split("ppp", value.address() + d.ptrSize())refcount = refcount & 0xffffffffd.check(refcount >= -1) # Can be -1 according to docs.if size > 4002:size = 4002d.putCharArrayHelper(data, size, charType, format)

保存后重新Debug，效果见下图：