From 222e2a7620e6520ffaf4fc4e69d79c18da31542e Mon Sep 17 00:00:00 2001 From: "Zancanaro; Carlo" Date: Mon, 24 Sep 2012 09:58:17 +1000 Subject: Add the clang library to the repo (with some of my changes, too). --- clang/test/Analysis/complex.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) create mode 100644 clang/test/Analysis/complex.c (limited to 'clang/test/Analysis/complex.c') diff --git a/clang/test/Analysis/complex.c b/clang/test/Analysis/complex.c new file mode 100644 index 0000000..c118a61 --- /dev/null +++ b/clang/test/Analysis/complex.c @@ -0,0 +1,18 @@ +// RUN: %clang_cc1 -analyze -analyzer-checker=core -analyzer-store=region -analyzer-constraints=basic -verify -Wno-unreachable-code -ffreestanding %s +// RUN: %clang_cc1 -analyze -analyzer-checker=core -analyzer-store=region -analyzer-constraints=range -verify -Wno-unreachable-code -ffreestanding %s + +#include + +void f1(int * p) { + + // This branch should be infeasible + // because __imag__ p is 0. + if (!p && __imag__ (intptr_t) p) + *p = 1; // no-warning + + // If p != 0 then this branch is feasible; otherwise it is not. + if (__real__ (intptr_t) p) + *p = 1; // no-warning + + *p = 2; // expected-warning{{Dereference of null pointer}} +} -- cgit v1.2.3