Scanner module crashing the app

[8dcc]

Hardware

• CPU: i7
• RAM: 16GiB
• GPU: Intel
• SDR: RTL-SDR v4

Software

• Operating System: Arch Linux
• SDR++: Nightly (currently a94e2d6, manually compiled).

Bug Description Starting the scanner module crashes the whole application. This is the GDB log and backtrace:

...
RTL-SDR Blog V4 Detected
[08/07/2025 19:24:03.000] [INFO] RTL-SDR Sample Rate: 2400000.000000
Disabled direct sampling mode
[New Thread 0x7fff79c076c0 (LWP 58549)]
[08/07/2025 19:24:04.000] [INFO] RTLSDRSourceModule 'RTL-SDR Source': Start!
[08/07/2025 19:24:04.000] [INFO] RTLSDRSourceModule 'RTL-SDR Source': Tune: 459029193.000000!
[New Thread 0x7fff794066c0 (LWP 58758)]
[Thread 0x7fff794066c0 (LWP 58758) exited]
[New Thread 0x7fff78c056c0 (LWP 58759)]
terminate called without an active exception

Thread 1 "sdrpp" received signal SIGABRT, Aborted.
0x00007ffff6aa5624 in ?? () from /usr/lib/libc.so.6
(gdb) where
#0  0x00007ffff6aa5624 in ?? () from /usr/lib/libc.so.6
#1  0x00007ffff6a4bba0 in raise () from /usr/lib/libc.so.6
#2  0x00007ffff6a33582 in abort () from /usr/lib/libc.so.6
#3  0x00007ffff6c97b2c in __gnu_cxx::__verbose_terminate_handler () at /usr/src/debug/gcc/gcc/libstdc++-v3/libsupc++/vterminate.cc:95
#4  0x00007ffff6cae3ba in __cxxabiv1::__terminate (handler=<optimized out>) at /usr/src/debug/gcc/gcc/libstdc++-v3/libsupc++/eh_terminate.cc:48
#5  0x00007ffff6c9752a in std::terminate () at /usr/src/debug/gcc/gcc/libstdc++-v3/libsupc++/eh_terminate.cc:58
#6  0x00007fffdc002083 in std::__terminate () at /usr/include/c++/14.2.1/x86_64-pc-linux-gnu/bits/c++config.h:324
#7  std::thread::operator= (this=0x555556536778, __t=...) at /usr/include/c++/14.2.1/bits/std_thread.h:195
#8  ScannerModule::start (this=0x555556536700) at /usr/src/debug/sdrpp-git/sdrpp/misc_modules/scanner/src/main.cpp:128
#9  ScannerModule::start (this=0x555556536700) at /usr/src/debug/sdrpp-git/sdrpp/misc_modules/scanner/src/main.cpp:124
#10 ScannerModule::menuHandler (ctx=0x555556536700) at /usr/src/debug/sdrpp-git/sdrpp/misc_modules/scanner/src/main.cpp:104
#11 0x00007ffff792b41e in Menu::draw(bool) () from /home/SNIP/SDRPlusPlus/build/core/libsdrpp_core.so
#12 0x00007ffff78d897f in MainWindow::draw() () from /home/SNIP/SDRPlusPlus/build/core/libsdrpp_core.so
#13 0x00007ffff7a0f11f in backend::renderLoop() () from /home/SNIP/SDRPlusPlus/build/core/libsdrpp_core.so
#14 0x00007ffff78a9f57 in sdrpp_main(int, char**) () from /home/SNIP/SDRPlusPlus/build/core/libsdrpp_core.so
#15 0x00007ffff6a35488 in ?? () from /usr/lib/libc.so.6
#16 0x00007ffff6a3554c in __libc_start_main () from /usr/lib/libc.so.6
#17 0x0000555555555075 in _start ()
(gdb)

Steps To Reproduce

1. Enable the "scanner" module.
2. Start the program on any frequency (e.g. 450MHz)
3. Press the "start" scanner button.

Screenshots

[AlexandreRouma]

known issue, unfixable before the 2.0 rewrite. The current tuning system just can't be fixed to accomodate how the tuner needs to operate. I'll close this once 2.0 is released.