[lldb][swift] Use dynamic types as a fallback in AddVariableInfo #2031
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Since commit eaceb46 AddVariableInfo is always using the dynamic type if requested. The dynamic types appear to not always be usable and caused a few tests to fail(1), but as the swiftTest decorator was always skipping all Swift tests since commit 2c911bc this wasn't discovered before landing. This patch restores the old behaviour where possible by first trying the non-dynamic type and falling back to the dynamic type in case the non-dynamic type can't be fully realized. (1) All the failures seem to be related to us reading corrupt data from memory when using the dynamic type in the expression parser. The dynamic types itself appear to be perfectly fine, so it's not clear why the new behaviour doesn't work.
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adrian-prantl
approved these changes
Oct 23, 2020
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Since commit eaceb46 AddVariableInfo is
always using the dynamic type if requested. The dynamic types appear
to not always be usable and caused a few tests to fail(1), but as the swiftTest
decorator was always skipping all Swift tests since commit
2c911bc this wasn't discovered before landing.
This patch restores the old behaviour where possible by first trying the
non-dynamic type and falling back to the dynamic type in case the non-dynamic
type can't be fully realized.
(1) All the failures seem to be related to us reading corrupt data from memory
when using the dynamic type in the expression parser. The dynamic types itself
appear to be perfectly fine, so it's not clear why the new behaviour doesn't work.