ASDenysPetrov updated this revision to Diff 353992.
ASDenysPetrov added a comment.
Updated due to comments.
Confirm crash on commit `3ed8ebc2f6b8172bed48cc5986d3b7af4cfca1bc` from
24.05.2020.
@NoQ ?
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D104381/new/
https://reviews.llvm.org/D104381
Files:
clang/test/Analysis/diagnostics/PR46264.cpp
Index: clang/test/Analysis/diagnostics/PR46264.cpp
===================================================================
--- /dev/null
+++ clang/test/Analysis/diagnostics/PR46264.cpp
@@ -0,0 +1,36 @@
+// RUN: %clang_analyze_cc1 -analyzer-checker=core -analyzer-output=text
-verify %s
+
+// PR46264
+// This case shall not crash with an assertion failure about void*
dereferening.
+// The crash has been last seen on commit
+// `3ed8ebc2f6b8172bed48cc5986d3b7af4cfca1bc` from 24.05.2020.
+namespace ns1 {
+namespace a {
+class b {
+public:
+ typedef int b::*c;
+ operator c() { return d ? &b::d : 0; }
+ // expected-note@-1{{'?' condition is true}}
+ // expected-note@-2{{Assuming field 'd' is not equal to 0}}
+ // expected-note@-3{{Returning value, which participates in a condition
later}}
+ int d;
+};
+} // namespace a
+using a::b;
+class e {
+ void f();
+ void g();
+ b h;
+};
+void e::f() {
+ e *i;
+ // expected-note@-1{{'i' declared without an initial value}}
+ if (h)
+ // expected-note@-1{{Taking true branch}}
+ // expected-note@-2{{'b::operator int ns1::a::b::*'}}
+ // expected-note@-3{{Returning from 'b::operator int ns1::a::b::*'}}
+ i->g();
+ // expected-note@-1{{Called C++ object pointer is uninitialized}}
+ // expected-warning@-2{{Called C++ object pointer is uninitialized}}
+}
+} // namespace ns1
Index: clang/test/Analysis/diagnostics/PR46264.cpp
===================================================================
--- /dev/null
+++ clang/test/Analysis/diagnostics/PR46264.cpp
@@ -0,0 +1,36 @@
+// RUN: %clang_analyze_cc1 -analyzer-checker=core -analyzer-output=text -verify %s
+
+// PR46264
+// This case shall not crash with an assertion failure about void* dereferening.
+// The crash has been last seen on commit
+// `3ed8ebc2f6b8172bed48cc5986d3b7af4cfca1bc` from 24.05.2020.
+namespace ns1 {
+namespace a {
+class b {
+public:
+ typedef int b::*c;
+ operator c() { return d ? &b::d : 0; }
+ // expected-note@-1{{'?' condition is true}}
+ // expected-note@-2{{Assuming field 'd' is not equal to 0}}
+ // expected-note@-3{{Returning value, which participates in a condition later}}
+ int d;
+};
+} // namespace a
+using a::b;
+class e {
+ void f();
+ void g();
+ b h;
+};
+void e::f() {
+ e *i;
+ // expected-note@-1{{'i' declared without an initial value}}
+ if (h)
+ // expected-note@-1{{Taking true branch}}
+ // expected-note@-2{{'b::operator int ns1::a::b::*'}}
+ // expected-note@-3{{Returning from 'b::operator int ns1::a::b::*'}}
+ i->g();
+ // expected-note@-1{{Called C++ object pointer is uninitialized}}
+ // expected-warning@-2{{Called C++ object pointer is uninitialized}}
+}
+} // namespace ns1
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