llvm-project

Author	SHA1	Message	Date
Aaron Ballman	6c93b3e29c	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. llvm-svn: 224465	2014-12-17 21:57:17 +00:00
Benjamin Kramer	054faa5a48	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 llvm-svn: 178371	2013-03-29 21:43:21 +00:00
Andy Gibbs	c6e68daac0	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. llvm-svn: 166280	2012-10-19 12:44:48 +00:00
Peter Collingbourne	54f43b87dc	Rename test/Sema/expr-comma-c89.c to expr-comma-c99.c. Spotted by Anton Lokhmotov. llvm-svn: 126482	2011-02-25 12:37:11 +00:00