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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 01:47:29 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 01:47:29 +0000
commit0ebf5bdf043a27fd3dfb7f92e0cb63d88954c44d (patch)
treea31f07c9bcca9d56ce61e9a1ffd30ef350d513aa /build/clang-plugin/tests/TestTemporaryClass.cpp
parentInitial commit. (diff)
downloadfirefox-esr-0ebf5bdf043a27fd3dfb7f92e0cb63d88954c44d.tar.xz
firefox-esr-0ebf5bdf043a27fd3dfb7f92e0cb63d88954c44d.zip
Adding upstream version 115.8.0esr.upstream/115.8.0esr
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'build/clang-plugin/tests/TestTemporaryClass.cpp')
-rw-r--r--build/clang-plugin/tests/TestTemporaryClass.cpp72
1 files changed, 72 insertions, 0 deletions
diff --git a/build/clang-plugin/tests/TestTemporaryClass.cpp b/build/clang-plugin/tests/TestTemporaryClass.cpp
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index 0000000000..f00acf0d7a
--- /dev/null
+++ b/build/clang-plugin/tests/TestTemporaryClass.cpp
@@ -0,0 +1,72 @@
+#define MOZ_TEMPORARY_CLASS __attribute__((annotate("moz_temporary_class")))
+#define MOZ_IMPLICIT __attribute__((annotate("moz_implicit")))
+
+#include <stddef.h>
+
+struct MOZ_TEMPORARY_CLASS Temporary {
+ int i;
+ Temporary() {}
+ MOZ_IMPLICIT Temporary(int a) {}
+ Temporary(int a, int b) {}
+ void *operator new(size_t x) throw() { return 0; }
+ void *operator new(size_t blah, char *buffer) { return buffer; }
+};
+
+template <class T>
+struct MOZ_TEMPORARY_CLASS TemplateClass {
+ T i;
+};
+
+void gobble(void *) { }
+
+void gobbleref(const Temporary&) { }
+
+template <class T>
+void gobbleanyref(const T&) { }
+
+void misuseNonTemporaryClass(int len) {
+ // All of these should error.
+ Temporary invalid; // expected-error {{variable of type 'Temporary' is only valid as a temporary}} expected-note {{value incorrectly allocated in an automatic variable}}
+ Temporary alsoInvalid[2]; // expected-error-re {{variable of type 'Temporary{{ ?}}[2]' is only valid as a temporary}} expected-note {{value incorrectly allocated in an automatic variable}} expected-note-re {{'Temporary{{ ?}}[2]' is a temporary type because it is an array of temporary type 'Temporary'}}
+ static Temporary invalidStatic; // expected-error {{variable of type 'Temporary' is only valid as a temporary}} expected-note {{value incorrectly allocated in a global variable}}
+ static Temporary alsoInvalidStatic[2]; // expected-error-re {{variable of type 'Temporary{{ ?}}[2]' is only valid as a temporary}} expected-note {{value incorrectly allocated in a global variable}} expected-note-re {{'Temporary{{ ?}}[2]' is a temporary type because it is an array of temporary type 'Temporary'}}
+
+ gobble(&invalid);
+ gobble(&invalidStatic);
+ gobble(&alsoInvalid[0]);
+
+ // All of these should be fine.
+ gobbleref(Temporary());
+ gobbleref(Temporary(10, 20));
+ gobbleref(Temporary(10));
+ gobbleref(10);
+ gobbleanyref(TemplateClass<int>());
+
+ // All of these should error.
+ gobble(new Temporary); // expected-error {{variable of type 'Temporary' is only valid as a temporary}} expected-note {{value incorrectly allocated on the heap}}
+ gobble(new Temporary[10]); // expected-error {{variable of type 'Temporary' is only valid as a temporary}} expected-note {{value incorrectly allocated on the heap}}
+ gobble(new TemplateClass<int>); // expected-error {{variable of type 'TemplateClass<int>' is only valid as a temporary}} expected-note {{value incorrectly allocated on the heap}}
+ gobble(len <= 5 ? &invalid : new Temporary); // expected-error {{variable of type 'Temporary' is only valid as a temporary}} expected-note {{value incorrectly allocated on the heap}}
+
+ // Placement new is odd, but okay.
+ char buffer[sizeof(Temporary)];
+ gobble(new (buffer) Temporary);
+}
+
+void defaultArg(const Temporary& arg = Temporary()) { // expected-error {{variable of type 'Temporary' is only valid as a temporary}} expected-note {{value incorrectly allocated in an automatic variable}}
+}
+
+// Can't be a global, this should error.
+Temporary invalidStatic; // expected-error {{variable of type 'Temporary' is only valid as a temporary}} expected-note {{value incorrectly allocated in a global variable}}
+
+struct RandomClass {
+ Temporary nonstaticMember; // This is okay if RandomClass is only used as a temporary.
+ static Temporary staticMember; // expected-error {{variable of type 'Temporary' is only valid as a temporary}} expected-note {{value incorrectly allocated in a global variable}}
+};
+
+struct BadInherit : Temporary {};
+
+void useStuffWrongly() {
+ gobbleanyref(BadInherit());
+ gobbleanyref(RandomClass());
+}