clang

Commit Graph

Author	SHA1	Message	Date
Aaron Ballman	f1a2b5319f	Adding a -Wunused-value warning for expressions with side effects used in an unevaluated expression context, such as sizeof(), or decltype(). Also adds a similar warning when the expression passed to typeid() is evaluated, since it is equally likely that the user would expect the expression operand to be unevaluated in that case. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@224465 91177308-0d34-0410-b5e6-96231b3b80d8	2014-12-17 21:57:17 +00:00
Benjamin Kramer	52b2e7085f	Sema: Warn on sizeof on binary ops on decayed arrays. The array will decay into a pointer, creating an unexpected result. sizeof(array + int) is an easy to make typo for sizeof(array) + int. This was motivated by a NetBSD security bug, used sizeof(key - r) instead of sizeof(key) - r, reducing entropy in a random number generator. http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/kern/subr_cprng.c.diff?r1=1.14&r2=1.15&only_with_tag=MAIN&f=h Differential Revision: http://llvm-reviews.chandlerc.com/D571 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@178371 91177308-0d34-0410-b5e6-96231b3b80d8	2013-03-29 21:43:21 +00:00
Andy Gibbs	8e8fb3be5b	Prior to adding the new "expected-no-diagnostics" directive to VerifyDiagnosticConsumer, make the necessary adjustment to 580 test-cases which will henceforth require this new directive. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@166280 91177308-0d34-0410-b5e6-96231b3b80d8	2012-10-19 12:44:48 +00:00
Peter Collingbourne	0289b666b5	Rename test/Sema/expr-comma-c89.c to expr-comma-c99.c. Spotted by Anton Lokhmotov. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126482 91177308-0d34-0410-b5e6-96231b3b80d8	2011-02-25 12:37:11 +00:00

4 Commits