gdb 堆栈跟踪中的第二列是什么意思？
我有一个看起来像这样的堆栈跟踪：
#3 0x00007fffde86c206 in GetMedia (p_ml=0xb91560, id=<value optimized out>, select=ML_MEDIA, reload=<value optimized out>) at ../../../modules/media_library/sql_media_library.c:1170
#4 0x00007fffde86a7d0 in GetInputItemFromMedia (p_ml=0xb91560, i_media=12276000) at ../../../modules/media_library/sql_media_library.c:1204
#5 0x00007ffff6765eab in ml_CreateInputItem (this=0x7784f0) at ../../../../include/vlc_media_library.h:887
#6 MLModel::popupInfo (this=0x7784f0) at ../../../../modules/gui/qt4/components/playlist/media_library/ml_model.cpp:528
#7 0x00007ffff67a7204 in MLModel::qt_metacall (this=0x7784f0, _c=<value optimized out>, _id=17710, _a=<value optimized out>) at components/playlist/media_library/ml_model.moc.cpp:79
#8 0x00007ffff4ec8e3f in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
我想知道第二列的含义。另外，缺少它意味着什么？可以看出，帧 #6 没有这个地址，我相信我的问题（段错误）是由于相关的原因引起的。
I have a stack trace that looks like this:
#3 0x00007fffde86c206 in GetMedia (p_ml=0xb91560, id=<value optimized out>, select=ML_MEDIA, reload=<value optimized out>) at ../../../modules/media_library/sql_media_library.c:1170
#4 0x00007fffde86a7d0 in GetInputItemFromMedia (p_ml=0xb91560, i_media=12276000) at ../../../modules/media_library/sql_media_library.c:1204
#5 0x00007ffff6765eab in ml_CreateInputItem (this=0x7784f0) at ../../../../include/vlc_media_library.h:887
#6 MLModel::popupInfo (this=0x7784f0) at ../../../../modules/gui/qt4/components/playlist/media_library/ml_model.cpp:528
#7 0x00007ffff67a7204 in MLModel::qt_metacall (this=0x7784f0, _c=<value optimized out>, _id=17710, _a=<value optimized out>) at components/playlist/media_library/ml_model.moc.cpp:79
#8 0x00007ffff4ec8e3f in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
I'm wondering that the second column signifies. Also, what does the lack of it signify? As can be seen, frame #6 does not have this address, and I believe my problem( a segfault ) is being caused due to something related.
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该列包含从上方被调用函数到该行调用者函数的返回地址。它的缺失可能意味着该函数是内联的。
That column contains the return address from the called function just above to the caller function on that line. Its lack probably means that the function was inlined.