GDB 7.11 发布，程序调试利器
* Per-inferior thread numbers (thread numbers are now per inferior insteadof being global).
* GDB now allows users to specify breakpoint locations using a more
explicit syntax (named "explicit location"). This feature is also
available in GDB/MI.
* New convenience variables ($_gthread, $_inferior)
* When hitting a breakpoint or receiving a signal while debugging a
multi-threaded program, the debugger now shows which thread triggered
the event.
* Record btrace now supports non-stop mode.
* Various improvements on AArch64 GNU/Linux
** Multi-architecture debugging support
** displaced stepping
** tracepoint support added in GDBserver
* kernel-based threads support on FreeBSD.
* Support for reading/writing memory and extracting values on architectures
whose memory is addressable in units of any integral multiple of 8 bits.
* In Ada, the overloads selection menu provides the parameter types and
return types for the matching overloaded subprograms.
* Various remote protocol improvements, including several new packets
which can be used to support features such as follow-exec-mode, exec
catchpoints, syscall catchpoints, etc.
* Some minor improvements in the Python API for extending GDB.
* Support for various ROM monitors has been removed:
target dbug dBUG ROM monitor for Motorola ColdFire
target picobug Motorola picobug monitor
target dink32 DINK32 ROM monitor for PowerPC
target m32r Renesas M32R/D ROM monitor
target mon2000 mon2000 ROM monitor
target ppcbug PPCBUG ROM monitor for PowerPC
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