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In the DWARF reader it can happen that a function type being built is
canonicalized too early, before the type is done building. This leads
to some spurious type differences later at comparison time. It
typically happens when a sub-type of the function type refers to the
function type itself. We correctly handle similar cases for class
types, but not for function types. Oops.
This patch handles this case for function types in the dwarf reader
and in the abixml reader.
* src/abg-dwarf-reader.cc (die_function_type_map_type): New
typedef.
* ():
(read_context::die_wip_function_types_map_): New data member.
(read_context::{die_wip_function_types_map,
is_wip_function_type_die_offset}): New methods.
(build_function_type): Mark the function being built as "work in
progress".
(maybe_canonicalize_type): Do not early-canonicalize WIP function
types.
* src/abg-reader.cc (build_function_type): Mark the function being
built as "work in progress".
* tests/test-diff-dwarf-abixml.cc: New test harness.
* tests/Makefile.am: Add new test harness runtestdiffdwarfabixml
to the build system.
* tests/data/test-diff-dwarf-abixml/test0-pr19026-libvtkIOSQL-6.1.so.1:
New test binary input.
* tests/data/test-diff-dwarf-abixml/test0-pr19026-libvtkIOSQL-6.1.so.1.abi:
New test input.
* tests/data/Makefile.am: Add new test inputs to source
distribution.
* tests/data/test-read-dwarf/test17-pr19027.so.abi: Adjust.
Signed-off-by: Dodji Seketeli <dodji@redhat.com>
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|---|---|---|
| .. | ||
| data | ||
| Makefile.am | ||
| print-diff-tree.cc | ||
| runtestcanonicalizetypes.sh.in | ||
| test-abicompat.cc | ||
| test-abidiff.cc | ||
| test-alt-dwarf-file.cc | ||
| test-core-diff.cc | ||
| test-diff2.cc | ||
| test-diff-dwarf-abixml.cc | ||
| test-diff-dwarf.cc | ||
| test-diff-filter.cc | ||
| test-diff-pkg.cc | ||
| test-diff-suppr.cc | ||
| test-dot.cc | ||
| test-ir-walker.cc | ||
| test-lookup-syms.cc | ||
| test-read-dwarf.cc | ||
| test-read-write.cc | ||
| test-svg.cc | ||
| test-types-stability.cc | ||
| test-utils.cc | ||
| test-utils.h | ||
| test-write-read-archive.cc | ||
| update-test-read-dwarf-output.py | ||