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7 Commits

Author SHA1 Message Date
Richard Smith 0848210b74 Fix some -Wexceptions false positives. 
Reimplement the "noexcept function actually throws" warning to properly handle
nested try-blocks. In passing, change 'throw;' handling to treat any enclosing
try block as being sufficient to suppress the warning rather than requiring a
'catch (...)'; the warning is intended to be conservatively-correct.

llvm-svn: 325545
 2018-02-20 02:32:30 +00:00
Richard Smith 56ae0a67e8 DR126: partially implement the const-correct rules for exception handler matching. 
While here, fix up the myriad other ways in which Sema's two "can this handler
catch that exception?" implementations get things wrong and unify them.

llvm-svn: 322431
 2018-01-13 05:05:45 +00:00
Erich Keane 8e61b3e50c [CFG] Relax Wexceptions warning on rethrow 
As reported here: https://bugs.llvm.org/show_bug.cgi?id=34973

"catch(...)" should catch EVERYTHING, even a rethrow. This
patch changes the order in which things are checked to ensure
that a '...' catch will get a rethrow.

Differential Revision: https://reviews.llvm.org/D39013

llvm-svn: 316030
 2017-10-17 20:57:24 +00:00
Erich Keane 9d10bdf644 [Sema] Corrected the warn-on-throw-from-noexcept behavior to include nothrow 
Discovered that 'nothrow' (which is supposed to be an alias for noexcept)
was not warning with a throw inside of it. This patch corrects the behavior
previously created to add 'nothrow' to this list.

Differential Revision: https://reviews.llvm.org/D38203

llvm-svn: 314229
 2017-09-26 18:20:39 +00:00
Erich Keane 7538b35cef Address comments that escaped D33333 
Patch By: Jen Yu

Differential Revision:https://reviews.llvm.org/D34671

llvm-svn: 307172
 2017-07-05 16:43:45 +00:00
Stephan Bergmann 7428528cb4 Fold exception-warnings.cpp into warn-throw-out-noexcept-func.cpp 
I had failed to notice the latter existed when I recently introduced the former.

llvm-svn: 306799
 2017-06-30 07:22:02 +00:00
Erich Keane 4c2fc126c8 Add test for 306149, warn on throw from noexcept 
llvm-svn: 306156
 2017-06-23 20:30:33 +00:00