Disable dtor inlining for clang-tidy
LLVM r328258 turned on a feature called temporary dtor inlining by
default for all of C++ in clang-tidy. This feature appears to be
somewhat over-aggressive when objects are being passed by value. For
example, given:
void foo(std::unique_ptr<int> i);
void bar() {
auto x = std::make_unique<int>();
int *i = x.get();
foo(std::move(x));
*i = 99;
}
...clang-tidy will complain about `*i = 99;` being a definite
use-after-free. This is incorrect, however: `foo` could stash the
`unique_ptr` it's given in a global, or a class member, or ...
Until upstream fixes this bug, it's probably best to keep this disabled.
Bug: None
Test: Ran the analyzer across Android locally. Nothing broke; number of
complaints dropped significantly.
Change-Id: I742eedf598a72a533285d913d191bfbbf0ce1688
diff --git a/core/binary.mk b/core/binary.mk
index 39f1161..f68908b 100644
--- a/core/binary.mk
+++ b/core/binary.mk
@@ -1724,10 +1724,19 @@
my_tidy_flags += -quiet -extra-arg-before=-fno-caret-diagnostics
endif
- # We might be using the static analyzer through clang-tidy.
- # https://bugs.llvm.org/show_bug.cgi?id=32914
ifneq ($(my_tidy_checks),)
+ # We might be using the static analyzer through clang-tidy.
+ # https://bugs.llvm.org/show_bug.cgi?id=32914
my_tidy_flags += -extra-arg-before=-D__clang_analyzer__
+
+ # A recent change in clang-tidy (r328258) enabled destructor inlining,
+ # which appears to cause a number of false positives. Until that's
+ # resolved, this turns off the effects of r328258.
+ # https://bugs.llvm.org/show_bug.cgi?id=37459
+ my_tidy_flags += -extra-arg-before=-Xclang
+ my_tidy_flags += -extra-arg-before=-analyzer-config
+ my_tidy_flags += -extra-arg-before=-Xclang
+ my_tidy_flags += -extra-arg-before=c++-temp-dtor-inlining=false
endif
endif
endif