Rename 'free' in warning messages to 'release' (llvm#150935)

Changed the warning message:

- **From**: 'Attempt to free released memory'
   **To**: 'Attempt to release already released memory'
- **From**: 'Attempt to free non-owned memory'
   **To**: 'Attempt to release non-owned memory'
- **From**: 'Use of memory after it is freed' 
   **To**: 'Use of memory after it is released'

All connected tests and their expectations have been changed
accordingly.

Inspired by [this
PR](llvm#147542 (comment))

Author: feyruzb

clang-tools-extra/test/clang-tidy/infrastructure/static-analyzer-config.cpp

@@ -16,5 +16,5 @@ void af2() {
   void *p = my_malloc(12);
   my_free(p);
   free(p);
-  // CHECK: warning: Attempt to free released memory [clang-analyzer-unix.Malloc]
+  // CHECK: warning: Attempt to release already released memory [clang-analyzer-unix.Malloc]
 }

clang-tools-extra/test/clang-tidy/infrastructure/static-analyzer.cpp

@@ -7,12 +7,12 @@ void f() {
   int *p = new int(42);
   delete p;
   delete p;
-  // CHECK: warning: Attempt to free released memory [clang-analyzer-cplusplus.NewDelete]
+  // CHECK: warning: Attempt to release already released memory [clang-analyzer-cplusplus.NewDelete]
 }
 
 void g() {
   void *q = malloc(132);
   free(q);
   free(q);
-  // CHECK: warning: Attempt to free released memory [clang-analyzer-unix.Malloc]
+  // CHECK: warning: Attempt to release already released memory [clang-analyzer-unix.Malloc]
 }

clang/docs/analyzer/checkers/unix_malloc_example.c

@@ -2,7 +2,7 @@
 void test() {
   int *p = malloc(1);
   free(p);
-  free(p); // warn: attempt to free released memory
+  free(p); // warn: attempt to release already released memory
 }
 
 void test() {

clang/lib/StaticAnalyzer/Checkers/MallocChecker.cpp

@@ -2693,7 +2693,7 @@ void MallocChecker::HandleUseAfterFree(CheckerContext &C, SourceRange Range,
         Frontend->UseFreeBug,
         AF.Kind == AF_InnerBuffer
             ? "Inner pointer of container used after re/deallocation"
-            : "Use of memory after it is freed",
+            : "Use of memory after it is released",
         N);
 
     R->markInteresting(Sym);
@@ -2721,8 +2721,8 @@ void MallocChecker::HandleDoubleFree(CheckerContext &C, SourceRange Range,
   if (ExplodedNode *N = C.generateErrorNode()) {
     auto R = std::make_unique<PathSensitiveBugReport>(
         Frontend->DoubleFreeBug,
-        (Released ? "Attempt to free released memory"
-                  : "Attempt to free non-owned memory"),
+        (Released ? "Attempt to release already released memory"
+                  : "Attempt to release non-owned memory"),
         N);
     if (Range.isValid())
       R->addRange(Range);

clang/test/Analysis/Inputs/expected-plists/NewDelete-path-notes.cpp.plist

@@ -33,9 +33,9 @@
      </array>
      <key>depth</key><integer>0</integer>
      <key>extended_message</key>
-     <string>Attempt to free released memory</string>
+     <string>Attempt to release already released memory</string>
      <key>message</key>
-     <string>Attempt to free released memory</string>
+     <string>Attempt to release already released memory</string>
     </dict>
     <dict>
      <key>kind</key><string>control</string>
@@ -232,7 +232,7 @@
       </array>
     </dict>
    </array>
-   <key>description</key><string>Attempt to free released memory</string>
+   <key>description</key><string>Attempt to release already released memory</string>
    <key>category</key><string>Memory error</string>
    <key>type</key><string>Double free</string>
    <key>check_name</key><string>cplusplus.NewDelete</string>
@@ -456,12 +456,12 @@
      </array>
      <key>depth</key><integer>0</integer>
      <key>extended_message</key>
-     <string>Attempt to free released memory</string>
+     <string>Attempt to release already released memory</string>
      <key>message</key>
-     <string>Attempt to free released memory</string>
+     <string>Attempt to release already released memory</string>
     </dict>
    </array>
-   <key>description</key><string>Attempt to free released memory</string>
+   <key>description</key><string>Attempt to release already released memory</string>
    <key>category</key><string>Memory error</string>
    <key>type</key><string>Double free</string>
    <key>check_name</key><string>cplusplus.NewDelete</string>

clang/test/Analysis/Inputs/expected-plists/malloc-plist.c.plist

@@ -1725,12 +1725,12 @@
      </array>
      <key>depth</key><integer>0</integer>
      <key>extended_message</key>
-     <string>Use of memory after it is freed</string>
+     <string>Use of memory after it is released</string>
      <key>message</key>
-     <string>Use of memory after it is freed</string>
+     <string>Use of memory after it is released</string>
     </dict>
    </array>
-   <key>description</key><string>Use of memory after it is freed</string>
+   <key>description</key><string>Use of memory after it is released</string>
    <key>category</key><string>Memory error</string>
    <key>type</key><string>Use-after-free</string>
    <key>check_name</key><string>unix.Malloc</string>
@@ -2985,12 +2985,12 @@
      </array>
      <key>depth</key><integer>0</integer>
      <key>extended_message</key>
-     <string>Use of memory after it is freed</string>
+     <string>Use of memory after it is released</string>
      <key>message</key>
-     <string>Use of memory after it is freed</string>
+     <string>Use of memory after it is released</string>
     </dict>
    </array>
-   <key>description</key><string>Use of memory after it is freed</string>
+   <key>description</key><string>Use of memory after it is released</string>
    <key>category</key><string>Memory error</string>
    <key>type</key><string>Use-after-free</string>
    <key>check_name</key><string>unix.Malloc</string>

clang/test/Analysis/Inputs/overloaded-delete-in-header.h

@@ -12,7 +12,7 @@ void DeleteInHeader::operator delete(void *ptr) {
 
   ::operator delete(ptr);
 
-  self->data = 2; // expected-warning {{Use of memory after it is freed [cplusplus.NewDelete]}}
+  self->data = 2; // expected-warning {{Use of memory after it is released [cplusplus.NewDelete]}}
 }
 
 #endif // OVERLOADED_DELETE_IN_SYSTEM_HEADER

clang/test/Analysis/Malloc+MismatchedDeallocator+NewDelete.cpp

@@ -9,7 +9,7 @@
 void testMallocDoubleFree() {
   int *p = (int *)malloc(sizeof(int));
   free(p);
-  free(p); // expected-warning{{Attempt to free released memory}}
+  free(p); // expected-warning{{Attempt to release already released memory}}
 }
 
 void testMallocLeak() {
@@ -19,7 +19,7 @@ void testMallocLeak() {
 void testMallocUseAfterFree() {
   int *p = (int *)malloc(sizeof(int));
   free(p);
-  int j = *p; // expected-warning{{Use of memory after it is freed}}
+  int j = *p; // expected-warning{{Use of memory after it is released}}
 }
 
 void testMallocBadFree() {
@@ -46,7 +46,7 @@ void testMismatchedDeallocator() {
 void testNewDoubleFree() {
   int *p = new int;
   delete p;
-  delete p; // expected-warning{{Attempt to free released memory}}
+  delete p; // expected-warning{{Attempt to release already released memory}}
 }
 
 void testNewLeak() {
@@ -59,7 +59,7 @@ void testNewLeak() {
 void testNewUseAfterFree() {
   int *p = (int *)operator new(0);
   delete p;
-  int j = *p; // expected-warning{{Use of memory after it is freed}}
+  int j = *p; // expected-warning{{Use of memory after it is released}}
 }
 
 void testNewBadFree() {
@@ -95,7 +95,7 @@ void testShouldReportDoubleFreeNotMismatched() {
   int *p = (int*)malloc(sizeof(int)*4);
   globalPtr = p;
   free(p);
-  delete globalPtr; // expected-warning {{Attempt to free released memory}}
+  delete globalPtr; // expected-warning {{Attempt to release already released memory}}
 }
 int *allocIntArray(unsigned c) {
   return new int[c];

clang/test/Analysis/NewDelete-checker-test.cpp

@@ -155,52 +155,52 @@ void g(SomeClass &c, ...);
 void testUseFirstArgAfterDelete() {
   int *p = new int;
   delete p;
-  f(p); // newdelete-warning{{Use of memory after it is freed}}
+  f(p); // newdelete-warning{{Use of memory after it is released}}
 }
 
 void testUseMiddleArgAfterDelete(int *p) {
   delete p;
-  f(0, p); // newdelete-warning{{Use of memory after it is freed}}
+  f(0, p); // newdelete-warning{{Use of memory after it is released}}
 }
 
 void testUseLastArgAfterDelete(int *p) {
   delete p;
-  f(0, 0, p); // newdelete-warning{{Use of memory after it is freed}}
+  f(0, 0, p); // newdelete-warning{{Use of memory after it is released}}
 }
 
 void testUseSeveralArgsAfterDelete(int *p) {
   delete p;
-  f(p, p, p); // newdelete-warning{{Use of memory after it is freed}}
+  f(p, p, p); // newdelete-warning{{Use of memory after it is released}}
 }
 
 void testUseRefArgAfterDelete(SomeClass &c) {
   delete &c;
-  g(c); // newdelete-warning{{Use of memory after it is freed}}
+  g(c); // newdelete-warning{{Use of memory after it is released}}
 }
 
 void testVariadicArgAfterDelete() {
   SomeClass c;
   int *p = new int;
   delete p;
-  g(c, 0, p); // newdelete-warning{{Use of memory after it is freed}}
+  g(c, 0, p); // newdelete-warning{{Use of memory after it is released}}
 }
 
 void testUseMethodArgAfterDelete(int *p) {
   SomeClass *c = new SomeClass;
   delete p;
-  c->f(p); // newdelete-warning{{Use of memory after it is freed}}
+  c->f(p); // newdelete-warning{{Use of memory after it is released}}
 }
 
 void testUseThisAfterDelete() {
   SomeClass *c = new SomeClass;
   delete c;
-  c->f(0); // newdelete-warning{{Use of memory after it is freed}}
+  c->f(0); // newdelete-warning{{Use of memory after it is released}}
 }
 
 void testDoubleDelete() {
   int *p = new int;
   delete p;
-  delete p; // newdelete-warning{{Attempt to free released memory}}
+  delete p; // newdelete-warning{{Attempt to release already released memory}}
 }
 
 void testExprDeleteArg() {
@@ -412,7 +412,7 @@ class DerefClass{
 void testDoubleDeleteClassInstance() {
   DerefClass *foo = new DerefClass();
   delete foo;
-  delete foo; // newdelete-warning {{Attempt to free released memory}}
+  delete foo; // newdelete-warning {{Attempt to release already released memory}}
 }
 
 class EmptyClass{
@@ -424,7 +424,7 @@ class EmptyClass{
 void testDoubleDeleteEmptyClass() {
   EmptyClass *foo = new EmptyClass();
   delete foo;
-  delete foo; // newdelete-warning {{Attempt to free released memory}}
+  delete foo; // newdelete-warning {{Attempt to release already released memory}}
 }
 
 struct Base {

clang/test/Analysis/NewDelete-intersections.mm

@@ -78,11 +78,11 @@ void testObjcFreeNewed() {
 void testFreeAfterDelete() {
   int *p = new int;
   delete p;
-  free(p); // newdelete-warning{{Use of memory after it is freed}}
+  free(p); // newdelete-warning{{Use of memory after it is released}}
 }
 
 void testStandardPlacementNewAfterDelete() {
   int *p = new int;
   delete p;
-  p = new (p) int; // newdelete-warning{{Use of memory after it is freed}}
+  p = new (p) int; // newdelete-warning{{Use of memory after it is released}}
 }