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git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@77905 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@77901 91177308-0d34-0410-b5e6-96231b3b80d8
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parsed correctly
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@77900 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@77891 91177308-0d34-0410-b5e6-96231b3b80d8
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not get flushed out when using '-disable-free'.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@77882 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@77881 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@77880 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@77879 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@77876 91177308-0d34-0410-b5e6-96231b3b80d8
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as well.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@77875 91177308-0d34-0410-b5e6-96231b3b80d8
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manipulate the entire GRState, not just the Store.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@77870 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@77862 91177308-0d34-0410-b5e6-96231b3b80d8
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'void*' (or 'const void*') as an identity transformation.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@77860 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@77854 91177308-0d34-0410-b5e6-96231b3b80d8
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happy.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@77850 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@77849 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@77848 91177308-0d34-0410-b5e6-96231b3b80d8
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ENABLE_EXPENSIVE_CHECKS clean on x86_64-.*-darwin10.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@77831 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@77830 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@77829 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@77828 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@77811 91177308-0d34-0410-b5e6-96231b3b80d8
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serious issues :)
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@77800 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@77786 91177308-0d34-0410-b5e6-96231b3b80d8
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- Off by default, you can test it with the --no-sh argument.
- For me it works for all but 3 tests, but there a number of FIXMEs and QOI
issues:
o Redirection isn't completely accurate -- in practice it can't portably
be, but I would like to error out if someone writes something which isn't
going to work. This is the source of the 3 test failures.
o Some pipe configurations have the potential to deadlock.
o It is significantly slower when multithreaded. I believe this is due to
locking happening under the hood, there is probably some kind of solution
but I haven't investigated yet.
o Log output is ugly.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@77784 91177308-0d34-0410-b5e6-96231b3b80d8
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- Empty arguments weren't handled correctly.
- Escapes outside quoted strings weren't handled.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@77783 91177308-0d34-0410-b5e6-96231b3b80d8
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made to RegionStore (and related classes) in order to handle some
analyzer failures involving casts and manipulation of symbolic memory.
The root of the change is in StoreManager::CastRegion(). Instead of
using ad hoc heuristics to decide when to layer an ElementRegion on a
casted MemRegion, we now always layer an ElementRegion when the cast
type is different than the original type of the region. This carries
the current cast information associated with a region around without
resorting to the error prone recording of "casted types" in GRState.
Along with this new policy of layering ElementRegions, I added a new
algorithm to strip away existing ElementRegions when they simply
represented casts of a base memory object. This algorithm computes
the raw "byte offset" that an ElementRegion represents from the base
region, and allows the new ElementRegion to be based off that offset.
The added benefit is that this naturally handles a series of casts of
a MemRegion without building up a set of redundant ElementRegions
(thus canonicalizing the region view).
Other related changes that cascaded from this one (as tests were
failing in RegionStore):
- Revamped RegionStoreManager::InvalidateRegion() to completely remove
all bindings and default values from a region and all subregions.
Now invalidated fields are not bound directly to new symbolic
values; instead the base region has a "default" symbol value from
which "derived symbols" can be created. The main advantage of this
approach is that it allows us to invalidate a region hierarchy and
then lazily instantiate new values no matter how deep the hierarchy
went (i.e., regardless of the number of field accesses,
e.g. x->f->y->z->...). The previous approach did not do this.
- Slightly reworked RegionStoreManager::RemoveDeadBindings() to also
incorporate live symbols and live regions that do not have direct
bindings but also have "default values" used for lazy instantiation.
The changes to 'InvalidateRegion' revealed that these were necessary
in order to achieve lazy instantiation of values in the region store
with those bindings being removed too early.
- The changes to InvalidateRegion() and RemoveDeadBindings() revealed
a serious bug in 'getSubRegionMap()' where not all region -> subregion
relationships involved in actually bindings (explicit and implicit)
were being recorded. This has been fixed by using a worklist algorithm
to iteratively fill in the region map.
- Added special support to RegionStoreManager::Bind()/Retrieve() to handle
OSAtomicCompareAndSwap in light of the new 'CastRegion' changes and the
layering of ElementRegions.
- Fixed a bug in SymbolReaper::isLive() where derived symbols were not
being marked live if the symbol they were derived from was also live.
This fix was critical for getting lazy instantiation in RegionStore
to work.
- Tidied up the implementation of ValueManager::getXXXSymbolVal() methods
to use SymbolManager::canSymbolicate() to decide whether or not a
symbol should be symbolicated.
- 'test/Analysis/misc-ps-xfail.m' now passes; that test case has been
moved to 'test/Analysis/misc-ps.m'.
- Tweaked some pretty-printing of MemRegions, and implemented
'ElementRegion::getRawOffset()' for use with the CastRegion changes.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@77782 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@77780 91177308-0d34-0410-b5e6-96231b3b80d8
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not work quite right with the changes I'm about to commit.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@77779 91177308-0d34-0410-b5e6-96231b3b80d8
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- Doug, please check.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@77778 91177308-0d34-0410-b5e6-96231b3b80d8
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- '\\\\' inside a "..." string becomes '\\'.
- The '<' token wasn't being recognized.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@77777 91177308-0d34-0410-b5e6-96231b3b80d8
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environment.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@77776 91177308-0d34-0410-b5e6-96231b3b80d8
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why dynamic binding sucks.
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git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@77763 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@77735 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@77732 91177308-0d34-0410-b5e6-96231b3b80d8
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subexpressions.
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trickier
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Will be used by an upcoming commit.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@77703 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@77702 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@77699 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@77698 91177308-0d34-0410-b5e6-96231b3b80d8
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