Szelethus created this revision.
Szelethus added reviewers: dcoughlin, NoQ, xazax.hun, rnkovacs, whisperity,
a.sidorin.
Szelethus added a project: clang.
Herald added subscribers: cfe-commits, gamesh411, dkrupp, donat.nagy,
mikhail.ramalho, szepet, baloghadamsoftware.
I've tested the checker on 5 open source projects with 3 different
configurations:
http://cc.inf.elte.hu:15420/Default/#
I think there is room for discussion whether which package should this checker
reside in, but in terms of development, I would argue that this is ready to go.
Shall I make some other tests?
Repository:
rC Clang
https://reviews.llvm.org/D58573
Files:
docs/analyzer/checkers.rst
include/clang/StaticAnalyzer/Checkers/Checkers.td
lib/StaticAnalyzer/Checkers/UninitializedObject/UninitializedObject.h
test/Analysis/cxx-uninitialized-object-inheritance.cpp
test/Analysis/cxx-uninitialized-object-no-dereference.cpp
test/Analysis/cxx-uninitialized-object-notes-as-warnings.cpp
test/Analysis/cxx-uninitialized-object-ptr-ref.cpp
test/Analysis/cxx-uninitialized-object-unguarded-access.cpp
test/Analysis/cxx-uninitialized-object-unionlike-constructs.cpp
test/Analysis/cxx-uninitialized-object.cpp
test/Analysis/objcpp-uninitialized-object.mm
www/analyzer/alpha_checks.html
www/analyzer/available_checks.html
Index: www/analyzer/available_checks.html
===================================================================
--- www/analyzer/available_checks.html
+++ www/analyzer/available_checks.html
@@ -435,6 +435,121 @@
} // warn
</pre></div></div></td></tr>
+
+<tr><td><a id="cplusplus.UninitializedObject"><div class="namedescr expandable"><span class="name">
+cplusplus.UninitializedObject</span><span class="lang">
+(C++)</span><div class="descr">
+This checker reports uninitialized fields in objects created after a constructor
+call. It doesn't only find direct uninitialized fields, but rather makes a deep
+inspection of the object, analyzing all of it's fields subfields. <br>
+The checker regards inherited fields as direct fields, so one will recieve
+warnings for uninitialized inherited data members as well. <br>
+<br>
+It has several options:
+<ul>
+ <li>
+ "<code>Pedantic</code>" (boolean). If its not set or is set to false, the
+ checker won't emit warnings for objects that don't have at least one
+ initialized field. This may be set with <br>
+ <code>-analyzer-config cplusplus.UninitializedObject:Pedantic=true</code>.
+ </li>
+ <li>
+ "<code>NotesAsWarnings</code>" (boolean). If set to true, the checker will
+ emit a warning for each uninitalized field, as opposed to emitting one
+ warning per constructor call, and listing the uninitialized fields that
+ belongs to it in notes. Defaults to false. <br>
+ <code>-analyzer-config cplusplus.UninitializedObject:NotesAsWarnings=true</code>.
+ </li>
+ <li>
+ "<code>CheckPointeeInitialization</code>" (boolean). If set to false, the
+ checker will not analyze the pointee of pointer/reference fields, and will
+ only check whether the object itself is initialized. Defaults to false. <br>
+ <code>-analyzer-config cplusplus.UninitializedObject:CheckPointeeInitialization=true</code>.
+ </li>
+ <li>
+ "<code>IgnoreRecordsWithField</code>" (string). If supplied, the checker
+ will not analyze structures that have a field with a name or type name that
+ matches the given pattern. Defaults to <code>""</code>.
+
+ <code>-analyzer-config cplusplus.UninitializedObject:IgnoreRecordsWithField="[Tt]ag|[Kk]ind"</code>.
+ </li>
+</ul></div></div></a></td>
+<td><div class="exampleContainer expandable">
+<div class="example"><pre>
+// With Pedantic and CheckPointeeInitialization set to true
+
+struct A {
+ struct B {
+ int x; // note: uninitialized field 'this->b.x'
+ // note: uninitialized field 'this->bptr->x'
+ int y; // note: uninitialized field 'this->b.y'
+ // note: uninitialized field 'this->bptr->y'
+ };
+ int *iptr; // note: uninitialized pointer 'this->iptr'
+ B b;
+ B *bptr;
+ char *cptr; // note: uninitialized pointee 'this->cptr'
+
+ A (B *bptr, char *cptr) : bptr(bptr), cptr(cptr) {}
+};
+
+void f() {
+ A::B b;
+ char c;
+ A a(&b, &c); // warning: 6 uninitialized fields
+ // after the constructor call
+}
+</pre></div><div class="separator"></div>
+<div class="example"><pre>
+// With Pedantic set to false and
+// CheckPointeeInitialization set to true
+// (every field is uninitialized)
+
+struct A {
+ struct B {
+ int x;
+ int y;
+ };
+ int *iptr;
+ B b;
+ B *bptr;
+ char *cptr;
+
+ A (B *bptr, char *cptr) : bptr(bptr), cptr(cptr) {}
+};
+
+void f() {
+ A::B b;
+ char c;
+ A a(&b, &c); // no warning
+}
+</pre></div><div class="separator"></div>
+<div class="example"><pre>
+// With Pedantic and CheckPointeeInitialization set to false
+// (pointees are regarded as initialized)
+
+struct A {
+ struct B {
+ int x; // note: uninitialized field 'this->b.x'
+ int y; // note: uninitialized field 'this->b.y'
+ };
+ int *iptr; // note: uninitialized pointer 'this->iptr'
+ B b;
+ B *bptr;
+ char *cptr;
+
+ A (B *bptr, char *cptr) : bptr(bptr), cptr(cptr) {}
+};
+
+void f() {
+ A::B b;
+ char c;
+ A a(&b, &c); // warning: 3 uninitialized fields
+ // after the constructor call
+}
+</pre></div></div></td></tr>
+
+
</tbody></table>
<!-- =========================== dead code =========================== -->
Index: www/analyzer/alpha_checks.html
===================================================================
--- www/analyzer/alpha_checks.html
+++ www/analyzer/alpha_checks.html
@@ -444,120 +444,6 @@
</pre></div></div></td></tr>
-<tr><td><a id="alpha.cplusplus.UninitializedObject"><div class="namedescr expandable"><span class="name">
-alpha.cplusplus.UninitializedObject</span><span class="lang">
-(C++)</span><div class="descr">
-This checker reports uninitialized fields in objects created after a constructor
-call. It doesn't only find direct uninitialized fields, but rather makes a deep
-inspection of the object, analyzing all of it's fields subfields. <br>
-The checker regards inherited fields as direct fields, so one will recieve
-warnings for uninitialized inherited data members as well. <br>
-<br>
-It has several options:
-<ul>
- <li>
- "<code>Pedantic</code>" (boolean). If its not set or is set to false, the
- checker won't emit warnings for objects that don't have at least one
- initialized field. This may be set with <br>
- <code>-analyzer-config alpha.cplusplus.UninitializedObject:Pedantic=true</code>.
- </li>
- <li>
- "<code>NotesAsWarnings</code>" (boolean). If set to true, the checker will
- emit a warning for each uninitalized field, as opposed to emitting one
- warning per constructor call, and listing the uninitialized fields that
- belongs to it in notes. Defaults to false. <br>
- <code>-analyzer-config alpha.cplusplus.UninitializedObject:NotesAsWarnings=true</code>.
- </li>
- <li>
- "<code>CheckPointeeInitialization</code>" (boolean). If set to false, the
- checker will not analyze the pointee of pointer/reference fields, and will
- only check whether the object itself is initialized. Defaults to false. <br>
- <code>-analyzer-config alpha.cplusplus.UninitializedObject:CheckPointeeInitialization=true</code>.
- </li>
- <li>
- "<code>IgnoreRecordsWithField</code>" (string). If supplied, the checker
- will not analyze structures that have a field with a name or type name that
- matches the given pattern. Defaults to <code>""</code>.
-
- <code>-analyzer-config alpha.cplusplus.UninitializedObject:IgnoreRecordsWithField="[Tt]ag|[Kk]ind"</code>.
- </li>
-</ul></div></div></a></td>
-<td><div class="exampleContainer expandable">
-<div class="example"><pre>
-// With Pedantic and CheckPointeeInitialization set to true
-
-struct A {
- struct B {
- int x; // note: uninitialized field 'this->b.x'
- // note: uninitialized field 'this->bptr->x'
- int y; // note: uninitialized field 'this->b.y'
- // note: uninitialized field 'this->bptr->y'
- };
- int *iptr; // note: uninitialized pointer 'this->iptr'
- B b;
- B *bptr;
- char *cptr; // note: uninitialized pointee 'this->cptr'
-
- A (B *bptr, char *cptr) : bptr(bptr), cptr(cptr) {}
-};
-
-void f() {
- A::B b;
- char c;
- A a(&b, &c); // warning: 6 uninitialized fields
- // after the constructor call
-}
-</pre></div><div class="separator"></div>
-<div class="example"><pre>
-// With Pedantic set to false and
-// CheckPointeeInitialization set to true
-// (every field is uninitialized)
-
-struct A {
- struct B {
- int x;
- int y;
- };
- int *iptr;
- B b;
- B *bptr;
- char *cptr;
-
- A (B *bptr, char *cptr) : bptr(bptr), cptr(cptr) {}
-};
-
-void f() {
- A::B b;
- char c;
- A a(&b, &c); // no warning
-}
-</pre></div><div class="separator"></div>
-<div class="example"><pre>
-// With Pedantic and CheckPointeeInitialization set to false
-// (pointees are regarded as initialized)
-
-struct A {
- struct B {
- int x; // note: uninitialized field 'this->b.x'
- int y; // note: uninitialized field 'this->b.y'
- };
- int *iptr; // note: uninitialized pointer 'this->iptr'
- B b;
- B *bptr;
- char *cptr;
-
- A (B *bptr, char *cptr) : bptr(bptr), cptr(cptr) {}
-};
-
-void f() {
- A::B b;
- char c;
- A a(&b, &c); // warning: 3 uninitialized fields
- // after the constructor call
-}
-</pre></div></div></td></tr>
-
-
</tbody></table>
Index: test/Analysis/objcpp-uninitialized-object.mm
===================================================================
--- test/Analysis/objcpp-uninitialized-object.mm
+++ test/Analysis/objcpp-uninitialized-object.mm
@@ -1,4 +1,4 @@
-// RUN: %clang_analyze_cc1 -analyzer-checker=core,alpha.cplusplus.UninitializedObject -std=c++11 -fblocks -verify %s
+// RUN: %clang_analyze_cc1 -analyzer-checker=core,cplusplus.UninitializedObject -std=c++11 -fblocks -verify %s
typedef void (^myBlock) ();
Index: test/Analysis/cxx-uninitialized-object.cpp
===================================================================
--- test/Analysis/cxx-uninitialized-object.cpp
+++ test/Analysis/cxx-uninitialized-object.cpp
@@ -1,10 +1,10 @@
-// RUN: %clang_analyze_cc1 -analyzer-checker=core,alpha.cplusplus.UninitializedObject \
-// RUN: -analyzer-config alpha.cplusplus.UninitializedObject:Pedantic=true -DPEDANTIC \
-// RUN: -analyzer-config alpha.cplusplus.UninitializedObject:CheckPointeeInitialization=true \
+// RUN: %clang_analyze_cc1 -analyzer-checker=core,cplusplus.UninitializedObject \
+// RUN: -analyzer-config cplusplus.UninitializedObject:Pedantic=true -DPEDANTIC \
+// RUN: -analyzer-config cplusplus.UninitializedObject:CheckPointeeInitialization=true \
// RUN: -std=c++14 -verify %s
-// RUN: %clang_analyze_cc1 -analyzer-checker=core,alpha.cplusplus.UninitializedObject \
-// RUN: -analyzer-config alpha.cplusplus.UninitializedObject:CheckPointeeInitialization=true \
+// RUN: %clang_analyze_cc1 -analyzer-checker=core,cplusplus.UninitializedObject \
+// RUN: -analyzer-config cplusplus.UninitializedObject:CheckPointeeInitialization=true \
// RUN: -std=c++14 -verify %s
//===----------------------------------------------------------------------===//
Index: test/Analysis/cxx-uninitialized-object-unionlike-constructs.cpp
===================================================================
--- test/Analysis/cxx-uninitialized-object-unionlike-constructs.cpp
+++ test/Analysis/cxx-uninitialized-object-unionlike-constructs.cpp
@@ -1,6 +1,6 @@
-// RUN: %clang_analyze_cc1 -analyzer-checker=core,alpha.cplusplus.UninitializedObject \
-// RUN: -analyzer-config alpha.cplusplus.UninitializedObject:Pedantic=true -DPEDANTIC \
-// RUN: -analyzer-config alpha.cplusplus.UninitializedObject:IgnoreRecordsWithField="[Tt]ag|[Kk]ind" \
+// RUN: %clang_analyze_cc1 -analyzer-checker=core,cplusplus.UninitializedObject \
+// RUN: -analyzer-config cplusplus.UninitializedObject:Pedantic=true -DPEDANTIC \
+// RUN: -analyzer-config cplusplus.UninitializedObject:IgnoreRecordsWithField="[Tt]ag|[Kk]ind" \
// RUN: -std=c++11 -verify %s
// expected-no-diagnostics
Index: test/Analysis/cxx-uninitialized-object-unguarded-access.cpp
===================================================================
--- test/Analysis/cxx-uninitialized-object-unguarded-access.cpp
+++ test/Analysis/cxx-uninitialized-object-unguarded-access.cpp
@@ -1,6 +1,6 @@
-// RUN: %clang_analyze_cc1 -analyzer-checker=core,alpha.cplusplus.UninitializedObject \
-// RUN: -analyzer-config alpha.cplusplus.UninitializedObject:Pedantic=true -DPEDANTIC \
-// RUN: -analyzer-config alpha.cplusplus.UninitializedObject:IgnoreGuardedFields=true \
+// RUN: %clang_analyze_cc1 -analyzer-checker=core,cplusplus.UninitializedObject \
+// RUN: -analyzer-config cplusplus.UninitializedObject:Pedantic=true -DPEDANTIC \
+// RUN: -analyzer-config cplusplus.UninitializedObject:IgnoreGuardedFields=true \
// RUN: -std=c++11 -verify %s
//===----------------------------------------------------------------------===//
Index: test/Analysis/cxx-uninitialized-object-ptr-ref.cpp
===================================================================
--- test/Analysis/cxx-uninitialized-object-ptr-ref.cpp
+++ test/Analysis/cxx-uninitialized-object-ptr-ref.cpp
@@ -1,10 +1,10 @@
-// RUN: %clang_analyze_cc1 -analyzer-checker=core,alpha.cplusplus.UninitializedObject \
-// RUN: -analyzer-config alpha.cplusplus.UninitializedObject:Pedantic=true -DPEDANTIC \
-// RUN: -analyzer-config alpha.cplusplus.UninitializedObject:CheckPointeeInitialization=true \
+// RUN: %clang_analyze_cc1 -analyzer-checker=core,cplusplus.UninitializedObject \
+// RUN: -analyzer-config cplusplus.UninitializedObject:Pedantic=true -DPEDANTIC \
+// RUN: -analyzer-config cplusplus.UninitializedObject:CheckPointeeInitialization=true \
// RUN: -std=c++11 -verify %s
-// RUN: %clang_analyze_cc1 -analyzer-checker=core,alpha.cplusplus.UninitializedObject \
-// RUN: -analyzer-config alpha.cplusplus.UninitializedObject:CheckPointeeInitialization=true \
+// RUN: %clang_analyze_cc1 -analyzer-checker=core,cplusplus.UninitializedObject \
+// RUN: -analyzer-config cplusplus.UninitializedObject:CheckPointeeInitialization=true \
// RUN: -std=c++11 -verify %s
//===----------------------------------------------------------------------===//
Index: test/Analysis/cxx-uninitialized-object-notes-as-warnings.cpp
===================================================================
--- test/Analysis/cxx-uninitialized-object-notes-as-warnings.cpp
+++ test/Analysis/cxx-uninitialized-object-notes-as-warnings.cpp
@@ -1,6 +1,6 @@
-// RUN: %clang_analyze_cc1 -analyzer-checker=core,alpha.cplusplus.UninitializedObject \
-// RUN: -analyzer-config alpha.cplusplus.UninitializedObject:NotesAsWarnings=true \
-// RUN: -analyzer-config alpha.cplusplus.UninitializedObject:CheckPointeeInitialization=true \
+// RUN: %clang_analyze_cc1 -analyzer-checker=core,cplusplus.UninitializedObject \
+// RUN: -analyzer-config cplusplus.UninitializedObject:NotesAsWarnings=true \
+// RUN: -analyzer-config cplusplus.UninitializedObject:CheckPointeeInitialization=true \
// RUN: -std=c++11 -verify %s
class NotesAsWarningsTest {
Index: test/Analysis/cxx-uninitialized-object-no-dereference.cpp
===================================================================
--- test/Analysis/cxx-uninitialized-object-no-dereference.cpp
+++ test/Analysis/cxx-uninitialized-object-no-dereference.cpp
@@ -1,4 +1,4 @@
-// RUN: %clang_analyze_cc1 -analyzer-checker=core,alpha.cplusplus.UninitializedObject \
+// RUN: %clang_analyze_cc1 -analyzer-checker=core,cplusplus.UninitializedObject \
// RUN: -std=c++11 -DPEDANTIC -verify %s
class UninitPointerTest {
Index: test/Analysis/cxx-uninitialized-object-inheritance.cpp
===================================================================
--- test/Analysis/cxx-uninitialized-object-inheritance.cpp
+++ test/Analysis/cxx-uninitialized-object-inheritance.cpp
@@ -1,6 +1,6 @@
-// RUN: %clang_analyze_cc1 -analyzer-checker=core,alpha.cplusplus.UninitializedObject \
-// RUN: -analyzer-config alpha.cplusplus.UninitializedObject:Pedantic=true -DPEDANTIC \
-// RUN: -analyzer-config alpha.cplusplus.UninitializedObject:CheckPointeeInitialization=true \
+// RUN: %clang_analyze_cc1 -analyzer-checker=core,cplusplus.UninitializedObject \
+// RUN: -analyzer-config cplusplus.UninitializedObject:Pedantic=true -DPEDANTIC \
+// RUN: -analyzer-config cplusplus.UninitializedObject:CheckPointeeInitialization=true \
// RUN: -std=c++11 -verify %s
//===----------------------------------------------------------------------===//
Index: lib/StaticAnalyzer/Checkers/UninitializedObject/UninitializedObject.h
===================================================================
--- lib/StaticAnalyzer/Checkers/UninitializedObject/UninitializedObject.h
+++ lib/StaticAnalyzer/Checkers/UninitializedObject/UninitializedObject.h
@@ -17,7 +17,7 @@
// won't emit warnings for objects that don't have at least one initialized
// field. This may be set with
//
-// `-analyzer-config alpha.cplusplus.UninitializedObject:Pedantic=true`.
+// `-analyzer-config cplusplus.UninitializedObject:Pedantic=true`.
//
// - "NotesAsWarnings" (boolean). If set to true, the checker will emit a
// warning for each uninitialized field, as opposed to emitting one warning
@@ -25,14 +25,14 @@
// to it in notes. Defaults to false.
//
// `-analyzer-config \
-// alpha.cplusplus.UninitializedObject:NotesAsWarnings=true`.
+// cplusplus.UninitializedObject:NotesAsWarnings=true`.
//
// - "CheckPointeeInitialization" (boolean). If set to false, the checker will
// not analyze the pointee of pointer/reference fields, and will only check
// whether the object itself is initialized. Defaults to false.
//
// `-analyzer-config \
-// alpha.cplusplus.UninitializedObject:CheckPointeeInitialization=true`.
+// cplusplus.UninitializedObject:CheckPointeeInitialization=true`.
//
// TODO: With some clever heuristics, some pointers should be dereferenced
// by default. For example, if the pointee is constructed within the
@@ -45,14 +45,14 @@
// matches the given pattern. Defaults to "".
//
// `-analyzer-config \
-// alpha.cplusplus.UninitializedObject:IgnoreRecordsWithField="[Tt]ag|[Kk]ind"`.
+// cplusplus.UninitializedObject:IgnoreRecordsWithField="[Tt]ag|[Kk]ind"`.
//
// - "IgnoreGuardedFields" (boolean). If set to true, the checker will analyze
// _syntactically_ whether the found uninitialized object is used without a
// preceding assert call. Defaults to false.
//
// `-analyzer-config \
-// alpha.cplusplus.UninitializedObject:IgnoreGuardedFields=true`.
+// cplusplus.UninitializedObject:IgnoreGuardedFields=true`.
//
// Most of the following methods as well as the checker itself is defined in
// UninitializedObjectChecker.cpp.
Index: include/clang/StaticAnalyzer/Checkers/Checkers.td
===================================================================
--- include/clang/StaticAnalyzer/Checkers/Checkers.td
+++ include/clang/StaticAnalyzer/Checkers/Checkers.td
@@ -448,6 +448,10 @@
HelpText<"Find use-after-move bugs in C++">,
Documentation<HasDocumentation>;
+def UninitializedObjectChecker: Checker<"UninitializedObject">,
+ HelpText<"Reports uninitialized fields after object construction">,
+ Documentation<HasAlphaDocumentation>;
+
} // end: "cplusplus"
let ParentPackage = CplusplusOptIn in {
@@ -489,10 +493,6 @@
Dependencies<[IteratorModeling]>,
Documentation<HasAlphaDocumentation>;
-def UninitializedObjectChecker: Checker<"UninitializedObject">,
- HelpText<"Reports uninitialized fields after object construction">,
- Documentation<HasAlphaDocumentation>;
-
} // end: "alpha.cplusplus"
Index: docs/analyzer/checkers.rst
===================================================================
--- docs/analyzer/checkers.rst
+++ docs/analyzer/checkers.rst
@@ -242,6 +242,110 @@
""""""""""""""""""""""""""""""
Checks C++ copy and move assignment operators for self assignment.
+cplusplus.UninitializedObject (C++)
+"""""""""""""""""""""""""""""""""""
+
+This checker reports uninitialized fields in objects created after a constructor
+call. It doesn't only find direct uninitialized fields, but rather makes a deep
+inspection of the object, analyzing all of it's fields subfields.
+The checker regards inherited fields as direct fields, so one will recieve
+warnings for uninitialized inherited data members as well.
+
+.. code-block:: cpp
+
+ // With Pedantic and CheckPointeeInitialization set to true
+
+ struct A {
+ struct B {
+ int x; // note: uninitialized field 'this->b.x'
+ // note: uninitialized field 'this->bptr->x'
+ int y; // note: uninitialized field 'this->b.y'
+ // note: uninitialized field 'this->bptr->y'
+ };
+ int *iptr; // note: uninitialized pointer 'this->iptr'
+ B b;
+ B *bptr;
+ char *cptr; // note: uninitialized pointee 'this->cptr'
+
+ A (B *bptr, char *cptr) : bptr(bptr), cptr(cptr) {}
+ };
+
+ void f() {
+ A::B b;
+ char c;
+ A a(&b, &c); // warning: 6 uninitialized fields
+ // after the constructor call
+ }
+
+ // With Pedantic set to false and
+ // CheckPointeeInitialization set to true
+ // (every field is uninitialized)
+
+ struct A {
+ struct B {
+ int x;
+ int y;
+ };
+ int *iptr;
+ B b;
+ B *bptr;
+ char *cptr;
+
+ A (B *bptr, char *cptr) : bptr(bptr), cptr(cptr) {}
+ };
+
+ void f() {
+ A::B b;
+ char c;
+ A a(&b, &c); // no warning
+ }
+
+ // With Pedantic set to true and
+ // CheckPointeeInitialization set to false
+ // (pointees are regarded as initialized)
+
+ struct A {
+ struct B {
+ int x; // note: uninitialized field 'this->b.x'
+ int y; // note: uninitialized field 'this->b.y'
+ };
+ int *iptr; // note: uninitialized pointer 'this->iptr'
+ B b;
+ B *bptr;
+ char *cptr;
+
+ A (B *bptr, char *cptr) : bptr(bptr), cptr(cptr) {}
+ };
+
+ void f() {
+ A::B b;
+ char c;
+ A a(&b, &c); // warning: 3 uninitialized fields
+ // after the constructor call
+ }
+
+
+**Options**
+
+This checker has several options which can be set from command line (e.g.
+``-analyzer-config cplusplus.UninitializedObject:Pedantic=true``):
+
+* ``Pedantic`` (boolean). If to false, the checker won't emit warnings for
+ objects that don't have at least one initialized field. Defaults to false.
+
+* ``NotesAsWarnings`` (boolean). If set to true, the checker will emit a
+ warning for each uninitalized field, as opposed to emitting one warning per
+ constructor call, and listing the uninitialized fields that belongs to it in
+ notes. *Defaults to false*.
+
+* ``CheckPointeeInitialization`` (boolean). If set to false, the checker will
+ not analyze the pointee of pointer/reference fields, and will only check
+ whether the object itself is initialized. *Defaults to false*.
+
+* ``IgnoreRecordsWithField`` (string). If supplied, the checker will not analyze
+ structures that have a field with a name or type name that matches the given
+ pattern. *Defaults to ""*.
+
.. _deadcode-checkers:
deadcode
@@ -1372,101 +1476,6 @@
a.foo(); // warn: method call on a 'moved-from' object 'a'
}
-alpha.cplusplus.UninitializedObject (C++)
-"""""""""""""""""""""""""""""""""""""""""
-
-This checker reports uninitialized fields in objects created after a constructor call.
-It doesn't only find direct uninitialized fields, but rather makes a deep inspection
-of the object, analyzing all of it's fields subfields.
-The checker regards inherited fields as direct fields, so one will
-recieve warnings for uninitialized inherited data members as well.
-
-.. code-block:: cpp
-
- // With Pedantic and CheckPointeeInitialization set to true
-
- struct A {
- struct B {
- int x; // note: uninitialized field 'this->b.x'
- // note: uninitialized field 'this->bptr->x'
- int y; // note: uninitialized field 'this->b.y'
- // note: uninitialized field 'this->bptr->y'
- };
- int *iptr; // note: uninitialized pointer 'this->iptr'
- B b;
- B *bptr;
- char *cptr; // note: uninitialized pointee 'this->cptr'
-
- A (B *bptr, char *cptr) : bptr(bptr), cptr(cptr) {}
- };
-
- void f() {
- A::B b;
- char c;
- A a(&b, &c); // warning: 6 uninitialized fields
- // after the constructor call
- }
-
- // With Pedantic set to false and
- // CheckPointeeInitialization set to true
- // (every field is uninitialized)
-
- struct A {
- struct B {
- int x;
- int y;
- };
- int *iptr;
- B b;
- B *bptr;
- char *cptr;
-
- A (B *bptr, char *cptr) : bptr(bptr), cptr(cptr) {}
- };
-
- void f() {
- A::B b;
- char c;
- A a(&b, &c); // no warning
- }
-
- // With Pedantic set to true and
- // CheckPointeeInitialization set to false
- // (pointees are regarded as initialized)
-
- struct A {
- struct B {
- int x; // note: uninitialized field 'this->b.x'
- int y; // note: uninitialized field 'this->b.y'
- };
- int *iptr; // note: uninitialized pointer 'this->iptr'
- B b;
- B *bptr;
- char *cptr;
-
- A (B *bptr, char *cptr) : bptr(bptr), cptr(cptr) {}
- };
-
- void f() {
- A::B b;
- char c;
- A a(&b, &c); // warning: 3 uninitialized fields
- // after the constructor call
- }
-
-
-**Options**
-
-This checker has several options which can be set from command line (e.g. ``-analyzer-config alpha.cplusplus.UninitializedObject:Pedantic=true``):
-
-* ``Pedantic`` (boolean). If to false, the checker won't emit warnings for objects that don't have at least one initialized field. Defaults to false.
-
-* ``NotesAsWarnings`` (boolean). If set to true, the checker will emit a warning for each uninitalized field, as opposed to emitting one warning per constructor call, and listing the uninitialized fields that belongs to it in notes. *Defaults to false.*.
-
-* ``CheckPointeeInitialization`` (boolean). If set to false, the checker will not analyze the pointee of pointer/reference fields, and will only check whether the object itself is initialized. *Defaults to false.*.
-
-* ``IgnoreRecordsWithField`` (string). If supplied, the checker will not analyze structures that have a field with a name or type name that matches the given pattern. *Defaults to ""*. Can be set with ``-analyzer-config alpha.cplusplus.UninitializedObject:IgnoreRecordsWithField="[Tt]ag|[Kk]ind"``.
-
alpha.deadcode
^^^^^^^^^^^^^^
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