$ sleep 20 & [1] 6159 gdb-master -nx GNU gdb (GDB) 7.3.50.20110817-cvs (gdb) set target-async on (gdb) attach 6159 Attaching to process 6159 (gdb) up #1 0x0000000000403c58 in ?? () (gdb) finish& Run till exit from #1 0x0000000000403c58 in ?? () (gdb) add-inferior Added inferior 2 (gdb) inferior 2 [Switching to inferior 2 [process 0] (<noexec>)] (gdb) /gdb/thread.c:663: internal-error: is_executing: Assertion `tp' failed. ---------- and the corresponding backtrace: (gdb) where ... #10 0x00000000005623b3 in is_executing (ptid=...) at /gdb/thread.c:663 #11 0x0000000000559c95 in fetch_inferior_event (client_data=<optimized out>) at /gdb/infrun.c:2750 #12 0x000000000056c539 in fetch_inferior_event_wrapper (client_data=<optimized out>) at /gdb/inf-loop.c:150 #13 0x00000000005650db in catch_errors (func=0x56c530 <fetch_inferior_event_wrapper>, func_args=0x0, errstring=0x7002e9 "", mask=6) at /gdb/exceptions.c:517 #14 0x000000000056c5a4 in inferior_event_handler (event_type=<optimized out>, client_data=<optimized out>) at /gdb/inf-loop.c:53 #15 0x000000000056a2c8 in process_event () at /gdb/event-loop.c:402 #16 process_event () at /gdb/event-loop.c:352 #17 0x000000000056a9c4 in gdb_do_one_event () at /gdb/event-loop.c:454 ...
CVSROOT: /cvs/src Module name: src Changes by: palves@sourceware.org 2011-09-05 15:46:35 Modified files: gdb : ChangeLog infrun.c Log message: 2011-09-05 Pedro Alves <pedro@codesourcery.com> PR cli/13110 * infrun.c (fetch_inferior_event): Check if there's a selected thread before checking if the selected thread is executing. Patches: http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/ChangeLog.diff?cvsroot=src&r1=1.13302&r2=1.13303 http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/infrun.c.diff?cvsroot=src&r1=1.502&r2=1.503
Fixed.