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-rw-r--r--gdb/gdbthread.h9
1 files changed, 8 insertions, 1 deletions
diff --git a/gdb/gdbthread.h b/gdb/gdbthread.h
index 0b19a8dc3c5..6baeb92c3e3 100644
--- a/gdb/gdbthread.h
+++ b/gdb/gdbthread.h
@@ -176,7 +176,14 @@ struct thread_info
int stepping_over_breakpoint;
/* Set to TRUE if we should finish single-stepping over a breakpoint
- after hitting the current step-resume breakpoint. */
+ after hitting the current step-resume breakpoint. The context here
+ is that GDB is to do `next' or `step' while signal arrives.
+ When stepping over a breakpoint and signal arrives, GDB will attempt
+ to skip signal handler, so it inserts a step_resume_breakpoint at the
+ signal return address, and resume inferior.
+ step_after_step_resume_breakpoint is set to TRUE at this moment in
+ order to keep GDB in mind that there is still a breakpoint to step over
+ when GDB gets back SIGTRAP from step_resume_breakpoint. */
int step_after_step_resume_breakpoint;
/* This is set TRUE when a catchpoint of a shared library event