[lldb/DWARF] Fix evaluator crash when accessing empty stack.
authorMed Ismail Bennani <medismail.bennani@gmail.com>
Tue, 31 Mar 2020 00:33:42 +0000 (02:33 +0200)
committerMed Ismail Bennani <medismail.bennani@gmail.com>
Tue, 31 Mar 2020 15:28:15 +0000 (17:28 +0200)
commite26eece1e2e7d7e6fbadb1207afef9b6353b5330
tree9c1e3feb91e37b4cb013f6a8a0da8c305813d6fc
parent665bebb46f54c3fb08247d10bbd8d21609c0fcde
[lldb/DWARF] Fix evaluator crash when accessing empty stack.

This patch fixes a crash that happens on the DWARF expression evaluator
when trying to access the top of the stack while it's empty.

Signed-off-by: Med Ismail Bennani <medismail.bennani@gmail.com>
lldb/source/Expression/DWARFExpression.cpp
lldb/unittests/Expression/DWARFExpressionTest.cpp