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Sourcing a GDB script that runs foreground execution commands in succession fails if the target can async: Breakpoint 1, main () at ../../../src/gdb/testsuite/gdb.base/source-execution.c:36 36 func1 (); (gdb) source ../../../src/gdb/testsuite/gdb.base/source-execution.gdb ../../../src/gdb/testsuite/gdb.base/source-execution.gdb:21: Error in sourced command file: Cannot execute this command while the selected thread is running. (gdb) FAIL: gdb.base/source-execution.exp: source source-execution.gdb That is, after a foreground execution command, GDB moves on to the following command immediately before waiting for the previous command to complete. https://sourceware.org/ml/gdb-patches/2011-09/msg00037.html (b4a14fd0) addressed this for command lists, Python's gdb.execute, etc., but missed "source". Fixed now in the same way. gdb/ 2014-03-25 Pedro Alves <palves@redhat.com> * cli/cli-script.c (script_from_file): Force the interpreter to sync mode. gdb/testsuite/ 2014-03-25 Pedro Alves <palves@redhat.com> Doug Evans <dje@google.com> * gdb.base/source-execution.c: New file. * gdb.base/source-execution.exp: New file. * gdb.base/source-execution.gdb: New file.