ASAN reported new/delete size mismatch (sliced object?) #274
Description
I started up glscopeclient as shown below with my Rigol DS1054Z powered on, and passed it the default name, rigol for the driver, usbtmc for the transport, and /dev/usbtmc1 as the device (which is the correct device), and I get the following crash after tabbing to the OK button and hitting enter (this was with latest master as of the time of the report on Debian Bullseye, btw):
$ OMP_WAIT_POLICY=PASSIVE ./glscopeclient
=================================================================
==1655737==ERROR: AddressSanitizer: new-delete-type-mismatch on 0x60800004d520 in thread T0:
object passed to delete has wrong type:
size of the allocated type: 88 bytes;
size of the deallocated type: 48 bytes.
#0 0x7f502c4f2467 in operator delete(void*, unsigned long) (/usr/lib/x86_64-linux-gnu/libasan.so.6+0xac467)
#1 0x55d737305e9b in sigc::slot0::~slot0() /usr/include/sigc++-2.0/sigc++/functors/slot.h:515
#2 0x55d737305eb7 in sigc::slot<void, sigc::nil, sigc::nil, sigc::nil, sigc::nil, sigc::nil, sigc::nil, sigc::nil>::~slot() /usr/include/sigc++-2.0/sigc++/functors/slot.h:1761
#3 0x55d73734f00a in OscilloscopeWindow::CreateWidgets(bool, bool) ~/scopehal/src/glscopeclient/OscilloscopeWindow.cpp:286
#4 0x55d737348148 in OscilloscopeWindow::OscilloscopeWindow(std::vector<Oscilloscope*, std::allocator<Oscilloscope*> > const&, bool, bool) ~/scopehal/src/glscopeclient/OscilloscopeWindow.cpp:82
#5 0x55d737430c05 in ScopeApp::run(std::__cxx11::basic_string<char, std::char_traits, std::allocator >, bool, bool, bool, bool, bool) ~/scopehal/src/glscopeclient/ScopeApp.cpp:50
#6 0x55d7374e572b in main ~/scopehal/src/glscopeclient/main.cpp:296
#7 0x7f502a89dcc9 in __libc_start_main ../csu/libc-start.c:308
#8 0x55d7372ed159 in _start (~/scopehal/build/src/glscopeclient/glscopeclient+0x1f1159)
0x60800004d520 is located 0 bytes inside of 88-byte region [0x60800004d520,0x60800004d578)
allocated by thread T0 here:
#0 0x7f502c4f1647 in operator new(unsigned long) (/usr/lib/x86_64-linux-gnu/libasan.so.6+0xab647)
#1 0x55d737399bf0 in sigc::slot0::slot0<sigc::bound_mem_functor0<void, OscilloscopeWindow> >(sigc::bound_mem_functor0<void, OscilloscopeWindow> const&) /usr/include/sigc++-2.0/sigc++/functors/slot.h:546
#2 0x55d73738948a in sigc::slot<void, sigc::nil, sigc::nil, sigc::nil, sigc::nil, sigc::nil, sigc::nil, sigc::nil>::slot<sigc::bound_mem_functor0<void, OscilloscopeWindow> >(sigc::bound_mem_functor0<void, OscilloscopeWindow> const&) (~/scopehal/build/src/glscopeclient/glscopeclient+0x28d48a)
#3 0x55d73734efd8 in OscilloscopeWindow::CreateWidgets(bool, bool) ~/scopehal/src/glscopeclient/OscilloscopeWindow.cpp:286
#4 0x55d737348148 in OscilloscopeWindow::OscilloscopeWindow(std::vector<Oscilloscope*, std::allocator<Oscilloscope*> > const&, bool, bool) ~/scopehal/src/glscopeclient/OscilloscopeWindow.cpp:82
#5 0x55d737430c05 in ScopeApp::run(std::__cxx11::basic_string<char, std::char_traits, std::allocator >, bool, bool, bool, bool, bool) ~/scopehal/src/glscopeclient/ScopeApp.cpp:50
#6 0x55d7374e572b in main ~/scopehal/src/glscopeclient/main.cpp:296
#7 0x7f502a89dcc9 in __libc_start_main ../csu/libc-start.c:308
SUMMARY: AddressSanitizer: new-delete-type-mismatch (/usr/lib/x86_64-linux-gnu/libasan.so.6+0xac467) in operator delete(void*, unsigned long)
==1655737==HINT: if you don't care about these errors you may set ASAN_OPTIONS=new_delete_type_mismatch=0
==1655737==ABORTING