https://bugs.llvm.org/show_bug.cgi?id=38181
Bug ID: 38181
Summary: std::future does not acquire lock in
__has_future_attached
Product: libc++
Version: unspecified
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: All Bugs
Assignee: unassignedclangb...@nondot.org
Reporter: mattv...@google.com
CC: llvm-bugs@lists.llvm.org, mclow.li...@gmail.com
std::future does not acquire lock in __has_future_attached, which causes a data
race that can be repro'd with the following test case. Compile with
-fsanitize=thread to see the TSAN warnings.
#include <future>
#include <gtest/gtest.h> // googletest header file
namespace {
int DoNothingButReturn() {
return 42;
}
TEST(FutureTest, SomeTest) {
std::async(std::launch::async, DoNothingButReturn);
}
} // namespace
--
You are receiving this mail because:
You are on the CC list for the bug._______________________________________________
llvm-bugs mailing list
llvm-bugs@lists.llvm.org
http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-bugs
