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path: root/lib/Analysis/Store.cpp
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2009-05-04Handle 'long x = 0; char *y = (char *) x;' by layering anTed Kremenek
'ElementRegion' on top of the VarRegion for 'x'. This causes the test case xfail_wine_crash.c to now pass for BasicStoreManager. It doesn't crash for RegionStoreManager either, but reports a bogus unintialized value warning. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70832 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-01StoreManager::CastRegion:Ted Kremenek
- Don't layer TypedViewRegions on top of any region except SymbolicRegions and AllocaRegions. This follows from my offline discussion within Zhongxing about how TypedViewRegions really only represent memory getting re-appropriated for a new purpose. Fallout from this change: - Move test case from xfail_rdar_6440393.m to misc-ps-64.m (it now passes). - test/Analysis/fields.c now fails for region store (crash). Marking XFAIL. - test/Analysis/rdar-6441136-region.c now fails (only runs with region store). Marking XFAIL. Diagnosis: The analyzer now correctly identifies an early out-of-bounds memory access then the one flagged: rdar-6541136-region.c:17:3: warning: Load or store into an out-of-bound memory position. *p = 1; ^~ Changing the line: char *p = (void*) &wonky[1]; to char *p = (void*) &wonky[0]; (which should delay the buffer overrun) causes region store to crash, probably because it expects a TypedViewRegion. - test/Analysis/casts.c (region store) now fails (crash). Marking XFAIL. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70565 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-21This patch is largely due to Zhongxing Xu. I've simply applied it because ofTed Kremenek
some refactoring I did recently to StoreManager. StoreManager::CastRegion: Handle casts to void* by stripping TypedViewRegions. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69751 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-21Refactor 'BasicStoreManager::CastRegion' and 'RegionStoreManager::CastRegion'Ted Kremenek
into StoreManager::CastRegion. Both methods were practically identical, and this is core logic that is common to all StoreManagers since it defines the basic invariants of the abstract memory model. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69730 91177308-0d34-0410-b5e6-96231b3b80d8