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python-gdb.py: catch gdb.error on gdb.selected_frame()

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This commit is contained in:
Victor Stinner 2016-12-16 10:00:39 +01:00
parent 7b440dfec4
commit 610f5d739d
1 changed files with 18 additions and 2 deletions
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20
Tools/gdb/libpython.py
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@ -1527,7 +1527,11 @@ class Frame(object):
def get_selected_python_frame(cls): def get_selected_python_frame(cls):
'''Try to obtain the Frame for the python-related code in the selected '''Try to obtain the Frame for the python-related code in the selected
frame, or None''' frame, or None'''
frame = cls.get_selected_frame() try:
frame = cls.get_selected_frame()
except gdb.error:
# No frame: Python didn't start yet
return None
while frame: while frame:
if frame.is_python_frame(): if frame.is_python_frame():
@ -1668,6 +1672,10 @@ PyList()
def move_in_stack(move_up): def move_in_stack(move_up):
'''Move up or down the stack (for the py-up/py-down command)''' '''Move up or down the stack (for the py-up/py-down command)'''
frame = Frame.get_selected_python_frame() frame = Frame.get_selected_python_frame()
if not frame:
print('Unable to locate python frame')
return
while frame: while frame:
if move_up: if move_up:
iter_frame = frame.older() iter_frame = frame.older()
@ -1730,6 +1738,10 @@ class PyBacktraceFull(gdb.Command):
def invoke(self, args, from_tty): def invoke(self, args, from_tty):
frame = Frame.get_selected_python_frame() frame = Frame.get_selected_python_frame()
if not frame:
print('Unable to locate python frame')
return
while frame: while frame:
if frame.is_python_frame(): if frame.is_python_frame():
frame.print_summary() frame.print_summary()
@ -1747,8 +1759,12 @@ class PyBacktrace(gdb.Command):
def invoke(self, args, from_tty): def invoke(self, args, from_tty):
sys.stdout.write('Traceback (most recent call first):\n')
frame = Frame.get_selected_python_frame() frame = Frame.get_selected_python_frame()
if not frame:
print('Unable to locate python frame')
return
sys.stdout.write('Traceback (most recent call first):\n')
while frame: while frame:
if frame.is_python_frame(): if frame.is_python_frame():
frame.print_traceback() frame.print_traceback()