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Summary:
The analsis on the throwing behvaiour on functions and statements gave only
a binary answer whether an exception could occur and if yes which types are
thrown.
This refactoring allows keeping track if there is a unknown factor, because the
code calls to some functions with unavailable source code with no `noexcept`
information.
This 'potential Unknown' information is propagated properly and can be queried
separately.
Reviewers: lebedev.ri, aaron.ballman, baloghadamsoftware, alexfh
Reviewed By: lebedev.ri, baloghadamsoftware
Subscribers: xazax.hun, rnkovacs, a.sidorin, Szelethus, donat.nagy, dkrupp, cfe-commits
Tags: #clang
Differential Revision: https://reviews.llvm.org/D57883
llvm-svn: 354517
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Summary:
The check `bugprone-exception-escape` does an AST-based analysis to determine
if a function might throw an exception and warns based on that information.
The analysis part is refactored into a standalone class similiar to
`ExprMutAnalyzer` that is generally useful.
I intent to use that class in a new check to automatically introduce `noexcept`
if possible.
Reviewers: aaron.ballman, alexfh, hokein, baloghadamsoftware, lebedev.ri
Reviewed By: baloghadamsoftware, lebedev.ri
Subscribers: lebedev.ri, mgorny, xazax.hun, rnkovacs, cfe-commits
Tags: #clang-tools-extra
Differential Revision: https://reviews.llvm.org/D57100
llvm-svn: 352741
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to reflect the new license.
We understand that people may be surprised that we're moving the header
entirely to discuss the new license. We checked this carefully with the
Foundation's lawyer and we believe this is the correct approach.
Essentially, all code in the project is now made available by the LLVM
project under our new license, so you will see that the license headers
include that license only. Some of our contributors have contributed
code under our old license, and accordingly, we have retained a copy of
our old license notice in the top-level files in each project and
repository.
llvm-svn: 351636
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Removed the uses of the allOf() matcher inside node matchers that are implicit
allOf(). Replaced uses of allOf() with the explicit node matcher where it makes
matchers more readable. Replace anyOf(hasName(), hasName(), ...) with the more
efficient and readable hasAnyName().
llvm-svn: 347520
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Checking whether a functions throws indirectly may be very expensive because it
needs to visit its whole call graph. Therefore we should first check whether the
function is forbidden to throw and only check whether it throws afterward. This
also seems to solve bug https://bugs.llvm.org/show_bug.cgi?id=39167 where the
execution time is so long that it seems to hang.
Differential Revision: https://reviews.llvm.org/D53187
llvm-svn: 344444
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Summary:
The check bugprone-exception-escape should not register
if -fno-exceptions is set for the compile options. Bailing out on non-cplusplus
and non-exceptions language options resolves the issue.
Reviewers: alexfh, aaron.ballman, baloghadamsoftware
Reviewed By: alexfh
Subscribers: lebedev.ri, xazax.hun, rnkovacs, cfe-commits
Differential Revision: https://reviews.llvm.org/D52880
llvm-svn: 343789
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Finds functions which may throw an exception directly or indirectly, but they
should not: Destructors, move constructors, move assignment operators, the
main() function, swap() functions, functions marked with throw() or noexcept
and functions given as option to the checker.
Differential Revision: https://reviews.llvm.org/D33537
llvm-svn: 336997
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