From 6cc4e25e76981ae47019bc47911724eaaf2f9a3f Mon Sep 17 00:00:00 2001 From: Anna Zaks Date: Sat, 9 Mar 2013 03:23:10 +0000 Subject: [PATCH] [analyzer] Add test case for reference to null pointer param check This tests that we track the original Expr if getDerefExpr fails. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176754 91177308-0d34-0410-b5e6-96231b3b80d8 --- .../diagnostics/deref-track-symbolic-region.cpp | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/test/Analysis/diagnostics/deref-track-symbolic-region.cpp b/test/Analysis/diagnostics/deref-track-symbolic-region.cpp index bc2dcbdc26..e166109ef8 100644 --- a/test/Analysis/diagnostics/deref-track-symbolic-region.cpp +++ b/test/Analysis/diagnostics/deref-track-symbolic-region.cpp @@ -14,3 +14,15 @@ void test(S *p) { r.y = 5; // expected-warning {{Access to field 'y' results in a dereference of a null pointer (loaded from variable 'r')}} // expected-note@-1{{Access to field 'y' results in a dereference of a null pointer (loaded from variable 'r')}} } + +void testRefParam(int *ptr) { + int &ref = *ptr; // expected-note {{'ref' initialized here}} + if (ptr) + // expected-note@-1{{Assuming 'ptr' is null}} + // expected-note@-2{{Taking false branch}} + return; + + extern void use(int &ref); + use(ref); // expected-warning{{Forming reference to null pointer}} + // expected-note@-1{{Forming reference to null pointer}} +} \ No newline at end of file -- 2.40.0