This patch adds a test to verify that events are sent properly to all UIs when the user selection context (inferior, thread, frame) changes. The goal of the C test file is to provide two threads that are stopped with the same predictable backtrace (so that we can test frame switching). The barrier helps us know when the child threads are started. Then, scheduler-locking is used to bring each thread one by one to the position we expect them to be during the test. gdb/testsuite/ChangeLog: YYYY-MM-DD Antoine Tremblay <antoine.tremblay@ericsson.com> YYYY-MM-DD Simon Marchi <simon.marchi@ericsson.com> PR gdb/20487 * gdb.mi/user-selected-context-sync.exp: New file. * gdb.mi/user-selected-context-sync.c: New file.
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