2 Commits

Author	SHA1	Message	Date
NAKAMURA Takumi	0cc61b2d30	clang/test/Analysis/malloc-overflow2.c: Appease 32-bit targets. ... size_t is not unsigned long for targeting i686 (and Windows x64). llvm-svn: 248458	2015-09-24 02:49:00 +00:00
Devin Coughlin	683dfd3124	[analyzer] Discard malloc-overflow bug-report when a known size is malloc'ed. ... This patch ignores malloc-overflow bug in two cases: Case1: x = a/b; where n < b malloc (x*n); Then x*n will not overflow. Case2: x = a; // when 'a' is a known value. malloc (x*n); Also replaced isa with dyn_cast. Reject multiplication by zero cases in MallocOverflowSecurityChecker Currently MallocOverflowSecurityChecker does not catch cases like: malloc(n * 0 * sizeof(int)); This patch rejects such cases. Two test cases added. malloc-overflow2.c has an example inspired from a code in linux kernel where the current checker flags a warning while it should not. A patch by Aditya Kumar! Differential Revision: http://reviews.llvm.org/D9924 llvm-svn: 248446	2015-09-23 23:27:55 +00:00