gdb: libthread_db
22.8.2 Automatically loading thread debugging library
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This feature is currently present only on GNU/Linux native hosts.
GDB reads in some cases thread debugging library from places specific
to the inferior (set libthread-db-search-path).
The special 'libthread-db-search-path' entry '$sdir' is processed
without checking this 'set auto-load libthread-db' switch as system
libraries have to be trusted in general. In all other cases of
'libthread-db-search-path' entries GDB checks first if 'set auto-load
libthread-db' is enabled before trying to open such thread debugging
library.
Note that loading of this debugging library also requires accordingly
configured 'auto-load safe-path' (Auto-loading safe path).
'set auto-load libthread-db [on|off]'
Enable or disable the auto-loading of inferior specific thread
debugging library.
'show auto-load libthread-db'
Show whether auto-loading of inferior specific thread debugging
library is enabled or disabled.
'info auto-load libthread-db'
Print the list of all loaded inferior specific thread debugging
libraries and for each such library print list of inferior PIDs
using it.