| 80de487e03dd0f44e4572e2122ebc1aa6a3961f5 |
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29-Aug-2012 |
Anna Zaks <ganna@apple.com> |
[analyzer] Improved diagnostic pruning for calls initializing values.
This heuristic addresses the case when a pointer (or ref) is passed
to a function, which initializes the variable (or sets it to something
other than '0'). On the branch where the inlined function does not
set the value, we report use of undefined value (or NULL pointer
dereference). The access happens in the caller and the path
through the callee would get pruned away with regular path pruning. To
solve this issue, we previously disabled diagnostic pruning completely
on undefined and null pointer dereference checks, which entailed very
verbose diagnostics in most cases. Furthermore, not all of the
undef value checks had the diagnostic pruning disabled.
This patch implements the following heuristic: if we pass a pointer (or
ref) to the region (on which the error is reported) into a function and
it's value is either undef or 'NULL' (and is a pointer), do not prune
the function.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@162863 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/test/Analysis/diagnostics/undef-value-caller.c
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| 7453a72cd0dcc70f29006ba488b743f078072bc7 |
|
06-Jun-2012 |
Ted Kremenek <kremenek@apple.com> |
PlistDiagnostics: force the ranges for control-flow edges to be single locations, forcing
adjacent edges to have compatible ranges. This simplifies the layout logic for some clients.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@158028 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/test/Analysis/diagnostics/undef-value-caller.c
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| d5edd849b6003b97e0e1ee5cf964c10affbe6bce |
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04-Jun-2012 |
Anna Zaks <ganna@apple.com> |
[analyzer] Fixup for r157950. Unbreak the bots.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@157954 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/test/Analysis/diagnostics/undef-value-caller.c
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| 0344e5423db6dbb614f057887be714d2c0f7f0f6 |
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04-Jun-2012 |
Anna Zaks <ganna@apple.com> |
[analyzer] Fix a diagnostics bug which lead to a crash on the buildbot.
This bug was triggered by r157851. It only happens in the case where we
don't perform optimal diagnostic pruning.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@157950 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/test/Analysis/diagnostics/undef-value-caller.c
|