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Re: RFC ThreadSanitizer tests


> Instead of mentioning the directory in the ChangeLog,
> mention the individual test files.
> ...
>    * g++.dg/dg.exp: Prune tsan subdirectory.

Thanks, I fixed the ChangeLog file.

> how long does it take to run make check-gcc check-g++ RUNTESTFLAGS=tsan.exp ?
> How much memory does it need?

I've run `make check-gcc RUNTESTFLAGS=tsan.exp' (this also includes c++ tests) under `/usr/bin/time -v' and got:

-Elapsed (wall clock) time (h:mm:ss or m:ss): 3:17.04
-Maximum resident set size (kbytes): 199872 kbytes

The same numbers for asan are (/usr/bin/time -v make check-gcc RUNTESTFLAGS=asan.exp):
-Elapsed (wall clock) time (h:mm:ss or m:ss): 3:56.38
-Maximum resident set size (kbytes): 3155264 kbytes

-Maxim

Attachment: gcc_testsuite_ChangeLog
Description: Text document

diff --git a/gcc/testsuite/c-c++-common/tsan/atomic_stack.c b/gcc/testsuite/c-c++-common/tsan/atomic_stack.c
new file mode 100644
index 0000000..eac71b8
--- /dev/null
+++ b/gcc/testsuite/c-c++-common/tsan/atomic_stack.c
@@ -0,0 +1,32 @@
+/* { dg-do run } */
+/* { dg-shouldfail "tsan" } */
+
+#include <pthread.h>
+#include <unistd.h>
+
+int Global;
+
+void *Thread1(void *x) {
+  sleep(1);
+  __atomic_fetch_add(&Global, 1, __ATOMIC_RELAXED);
+  return NULL;
+}
+
+void *Thread2(void *x) {
+  Global++;
+  return NULL;
+}
+
+int main() {
+  pthread_t t[2];
+  pthread_create(&t[0], NULL, Thread1, NULL);
+  pthread_create(&t[1], NULL, Thread2, NULL);
+  pthread_join(t[0], NULL);
+  pthread_join(t[1], NULL);
+  return 0;
+}
+
+/* { dg-output "WARNING: ThreadSanitizer: data race.*(\n|\r\n|\r)" } */
+/* { dg-output "  Atomic write of size 4.*" } */
+/* { dg-output "    #0 __tsan_atomic32_fetch_add.*" } */
+/* { dg-output "    #1 Thread1.*" } */
diff --git a/gcc/testsuite/c-c++-common/tsan/fd_pipe_race.c b/gcc/testsuite/c-c++-common/tsan/fd_pipe_race.c
new file mode 100644
index 0000000..fc76cbf
--- /dev/null
+++ b/gcc/testsuite/c-c++-common/tsan/fd_pipe_race.c
@@ -0,0 +1,37 @@
+/* { dg-do run } */
+/* { dg-shouldfail "tsan" } */
+
+#include <pthread.h>
+#include <stdio.h>
+#include <unistd.h>
+
+int fds[2];
+
+void *Thread1(void *x) {
+  write(fds[1], "a", 1);
+  return NULL;
+}
+
+void *Thread2(void *x) {
+  sleep(1);
+  close(fds[0]);
+  close(fds[1]);
+  return NULL;
+}
+
+int main() {
+  pipe(fds);
+  pthread_t t[2];
+  pthread_create(&t[0], NULL, Thread1, NULL);
+  pthread_create(&t[1], NULL, Thread2, NULL);
+  pthread_join(t[0], NULL);
+  pthread_join(t[1], NULL);
+}
+
+/* { dg-output "WARNING: ThreadSanitizer: data race.*\n" } */
+/* { dg-output "  Write of size 8.*\n" } */
+/* { dg-output "    #0 close.*\n" } */
+/* { dg-output "    #1 Thread2.*\n" } */
+/* { dg-output "  Previous read of size 8.*\n" } */
+/* { dg-output "    #0 write.*\n" } */
+/* { dg-output "    #1 Thread1.*\n" } */
diff --git a/gcc/testsuite/c-c++-common/tsan/free_race.c b/gcc/testsuite/c-c++-common/tsan/free_race.c
new file mode 100644
index 0000000..362c92b
--- /dev/null
+++ b/gcc/testsuite/c-c++-common/tsan/free_race.c
@@ -0,0 +1,28 @@
+/* { dg-do run } */
+/* { dg-shouldfail "tsan" } */
+
+#include <stdlib.h>
+
+void __attribute__((noinline)) foo(int *mem) {
+  free(mem);
+}
+
+void __attribute__((noinline)) bar(int *mem) {
+  mem[0] = 42;
+}
+
+int main() {
+  int *mem =(int*)malloc (100);
+  foo(mem);
+  bar(mem);
+  return 0;
+}
+
+/* { dg-output "WARNING: ThreadSanitizer: heap-use-after-free.*(\n|\r\n|\r)" } */
+/* { dg-output "  Write of size 4 at.* by main thread:(\n|\r\n|\r)" } */
+/* { dg-output "    #0 bar.*(\n|\r\n|\r)" } */
+/* { dg-output "    #1 main.*(\n|\r\n|\r)" } */
+/* { dg-output "  Previous write of size 8 at.* by main thread:(\n|\r\n|\r)" } */
+/* { dg-output "    #0 free.*(\n|\r\n|\r)" } */
+/* { dg-output "    #\(1|2\) foo.*(\n|\r\n|\r)" } */
+/* { dg-output "    #\(2|3\) main.*(\n|\r\n|\r)" } */
diff --git a/gcc/testsuite/c-c++-common/tsan/mutexset1.c b/gcc/testsuite/c-c++-common/tsan/mutexset1.c
new file mode 100644
index 0000000..783f262
--- /dev/null
+++ b/gcc/testsuite/c-c++-common/tsan/mutexset1.c
@@ -0,0 +1,41 @@
+/* { dg-do run } */
+/* { dg-shouldfail "tsan" } */
+
+#include <pthread.h>
+#include <stdio.h>
+#include <unistd.h>
+
+int Global;
+pthread_mutex_t mtx;
+
+void *Thread1(void *x) {
+  sleep(1);
+  pthread_mutex_lock(&mtx);
+  Global++;
+  pthread_mutex_unlock(&mtx);
+  return NULL;
+}
+
+void *Thread2(void *x) {
+  Global--;
+  return NULL;/* { dg-output ".*" } */
+
+}
+
+int main() {
+  pthread_mutex_init(&mtx, 0);
+  pthread_t t[2];
+  pthread_create(&t[0], NULL, Thread1, NULL);
+  pthread_create(&t[1], NULL, Thread2, NULL);
+  pthread_join(t[0], NULL);
+  pthread_join(t[1], NULL);
+  pthread_mutex_destroy(&mtx);
+  return 0;
+}
+
+/* { dg-output "WARNING: ThreadSanitizer: data race.*(\n|\r\n|\r)" } */
+/* { dg-output "  Read of size 4 at 0x\[0-9a-f\]+ by thread T1 \\(mutexes: write M\[0-9\]\\):.*" } */
+/* { dg-output "  Previous write of size 4 at 0x\[0-9a-f\]+ by thread T2:.*" } */
+/* { dg-output "  Mutex M\[0-9\] created at:.*" } */
+/* { dg-output "    #0 pthread_mutex_init.*" } */
+/* { dg-output "    #1 main (.*mutexset1.c|\\?{2}):\[0-9]+.*" } */
diff --git a/gcc/testsuite/c-c++-common/tsan/race_on_barrier.c b/gcc/testsuite/c-c++-common/tsan/race_on_barrier.c
new file mode 100644
index 0000000..407c712
--- /dev/null
+++ b/gcc/testsuite/c-c++-common/tsan/race_on_barrier.c
@@ -0,0 +1,33 @@
+/* { dg-do run } */
+/* { dg-shouldfail "tsan" } */
+
+#include <pthread.h>
+#include <stdio.h>
+#include <stddef.h>
+#include <unistd.h>
+
+pthread_barrier_t B;
+int Global;
+
+void *Thread1(void *x) {
+  pthread_barrier_init(&B, 0, 2);
+  pthread_barrier_wait(&B);
+  return NULL;
+}
+
+void *Thread2(void *x) {
+  sleep(1);
+  pthread_barrier_wait(&B);
+  return NULL;
+}
+
+int main() {
+  pthread_t t;
+  pthread_create(&t, NULL, Thread1, NULL);
+  Thread2(0);
+  pthread_join(t, NULL);
+  pthread_barrier_destroy(&B);
+  return 0;
+}
+
+/* { dg-output "WARNING: ThreadSanitizer: data race.*(\n|\r\n|\r)" } */
diff --git a/gcc/testsuite/c-c++-common/tsan/sleep_sync.c b/gcc/testsuite/c-c++-common/tsan/sleep_sync.c
new file mode 100644
index 0000000..8203d54
--- /dev/null
+++ b/gcc/testsuite/c-c++-common/tsan/sleep_sync.c
@@ -0,0 +1,31 @@
+/* { dg-do run } */
+/* { dg-shouldfail "tsan" } */
+
+#include <pthread.h>
+#include <unistd.h>
+
+int X = 0;
+
+void MySleep() {
+  sleep(1);
+}
+
+void *Thread(void *p) {
+  MySleep();  // Assume the main thread has done the write.
+  X = 42;
+  return 0;
+}
+
+int main() {
+  pthread_t t;
+  pthread_create(&t, 0, Thread, 0);
+  X = 43;
+  pthread_join(t, 0);
+  return 0;
+}
+
+/* { dg-output "WARNING: ThreadSanitizer: data race.*(\n|\r\n|\r).*} */
+/* { dg-output "  As if synchronized via sleep:(\n|\r\n|\r)} */
+/* { dg-output "         #0 sleep.*"*} */
+/* { dg-output "         #1 MySleep.*"*} */
+/* { dg-output "         #2 Thread.*"*} */
diff --git a/gcc/testsuite/c-c++-common/tsan/thread_leak.c b/gcc/testsuite/c-c++-common/tsan/thread_leak.c
new file mode 100644
index 0000000..416ef77
--- /dev/null
+++ b/gcc/testsuite/c-c++-common/tsan/thread_leak.c
@@ -0,0 +1,18 @@
+/* { dg-do run } */
+
+#include <pthread.h>
+#include <stdio.h>
+
+void *Thread(void *x) {
+  return 0;
+}
+
+int main() {
+  pthread_t t;
+  pthread_create(&t, 0, Thread, 0);
+  pthread_join(t, 0);
+  printf("PASS\n");
+  return 0;
+}
+
+/* { dg-prune-output "WARNING: ThreadSanitizer: thread leak.*" } */
diff --git a/gcc/testsuite/c-c++-common/tsan/thread_leak1.c b/gcc/testsuite/c-c++-common/tsan/thread_leak1.c
new file mode 100644
index 0000000..18bcf2a
--- /dev/null
+++ b/gcc/testsuite/c-c++-common/tsan/thread_leak1.c
@@ -0,0 +1,19 @@
+/* { dg-do run } */
+/* { dg-shouldfail "tsan" } */
+
+#include <pthread.h>
+#include <unistd.h>
+
+void *Thread(void *x) {
+  return 0;
+}
+
+int main() {
+  pthread_t t;
+  pthread_create(&t, 0, Thread, 0);
+  sleep(1);
+  return 0;
+}
+
+/* { dg-output "WARNING: ThreadSanitizer: thread leak.*(\n|\r\n|\r)" } */
+/* { dg-output "SUMMARY: ThreadSanitizer: thread leak.*main.*(\n|\r\n|\r)" } */
diff --git a/gcc/testsuite/c-c++-common/tsan/thread_leak2.c b/gcc/testsuite/c-c++-common/tsan/thread_leak2.c
new file mode 100644
index 0000000..12ac734
--- /dev/null
+++ b/gcc/testsuite/c-c++-common/tsan/thread_leak2.c
@@ -0,0 +1,23 @@
+/* { dg-do run } */
+/* { dg-shouldfail "tsan" } */
+/* { dg-skip-if "" { *-*-* }  { "-O3 -funroll-loops" "-O3 -funroll-all-loops" } { "" } } */
+
+#include <pthread.h>
+#include <unistd.h>
+
+void *Thread(void *x) {
+  return 0;
+}
+
+int main() {
+  int i;
+  for (i = 0; i < 5; i++) {
+    pthread_t t;
+    pthread_create(&t, 0, Thread, 0);
+  }
+  sleep(1);
+  return 0;
+}
+
+/* { dg-output "WARNING: ThreadSanitizer: thread leak.*(\n|\r\n|\r)" } */
+/* { dg-output "  And 4 more similar thread leaks.*" } */
diff --git a/gcc/testsuite/c-c++-common/tsan/tiny_race.c b/gcc/testsuite/c-c++-common/tsan/tiny_race.c
new file mode 100644
index 0000000..0356183
--- /dev/null
+++ b/gcc/testsuite/c-c++-common/tsan/tiny_race.c
@@ -0,0 +1,23 @@
+/* { dg-do run } */
+/* { dg-shouldfail "tsan" } */
+
+#include <pthread.h>
+#include <unistd.h>
+
+int Global;
+
+void *Thread1(void *x) {
+  sleep(1);
+  Global = 42;
+  return x;
+}
+
+int main() {
+  pthread_t t;
+  pthread_create(&t, 0, Thread1, 0);
+  Global = 43;
+  pthread_join(t, 0);
+  return Global;
+}
+
+/* { dg-output "WARNING: ThreadSanitizer: data race.*(\n|\r\n|\r)" } */
diff --git a/gcc/testsuite/c-c++-common/tsan/tls_race.c b/gcc/testsuite/c-c++-common/tsan/tls_race.c
new file mode 100644
index 0000000..041e9af
--- /dev/null
+++ b/gcc/testsuite/c-c++-common/tsan/tls_race.c
@@ -0,0 +1,21 @@
+/* { dg-do run } */
+/* { dg-shouldfail "tsan" } */
+
+#include <pthread.h>
+#include <stddef.h>
+
+void *Thread(void *a) {
+  *(int*)a = 43;
+  return 0;
+}
+
+int main() {
+  static __thread int Var = 42;
+  pthread_t t;
+  pthread_create(&t, 0, Thread, &Var);
+  Var = 43;
+  pthread_join(t, 0);
+}
+
+/* { dg-output "WARNING: ThreadSanitizer: data race.*(\n|\r\n|\r).*" } */
+/* { dg-output "  Location is TLS of main thread.(\n|\r\n|\r).*" } */
diff --git a/gcc/testsuite/c-c++-common/tsan/write_in_reader_lock.c b/gcc/testsuite/c-c++-common/tsan/write_in_reader_lock.c
new file mode 100644
index 0000000..c6a0bee
--- /dev/null
+++ b/gcc/testsuite/c-c++-common/tsan/write_in_reader_lock.c
@@ -0,0 +1,37 @@
+/* { dg-do run } */
+/* { dg-shouldfail "tsan" } */
+
+#include <pthread.h>
+#include <unistd.h>
+
+pthread_rwlock_t rwlock;
+int GLOB;
+
+void *Thread1(void *p) {
+ (void)p;
+  pthread_rwlock_rdlock(&rwlock);
+  // Write under reader lock.
+  sleep(1);
+  GLOB++;
+  pthread_rwlock_unlock(&rwlock);
+  return 0;
+}
+
+int main(int argc, char *argv[]) {
+  pthread_rwlock_init(&rwlock, NULL);
+  pthread_rwlock_rdlock(&rwlock);
+  pthread_t t;
+  pthread_create(&t, 0, Thread1, 0);
+  volatile int x = GLOB;
+ (void)x;
+  pthread_rwlock_unlock(&rwlock);
+  pthread_join(t, 0);
+  pthread_rwlock_destroy(&rwlock);
+  return 0;
+}
+
+/* { dg-output "WARNING: ThreadSanitizer: data race.*(\n|\r\n|\r)" } */
+/* { dg-output "  Write of size 4 at 0x\[0-9a-f\]+ by thread T1.*:(\n|\r\n|\r).*" } */
+/* { dg-output "    #0 Thread1.*\(write_in_reader_lock.c|\\?{2}\):\[0-9\]+ .*" } */
+/* { dg-output "  Previous read of size 4 at.* by main thread.*:(\n|\r\n|\r).*" } */
+/* { dg-output "    #0 main.*\(write_in_reader_lock.c|\\?{2}\):\[0-9\]+.*" } */
diff --git a/gcc/testsuite/g++.dg/dg.exp b/gcc/testsuite/g++.dg/dg.exp
index d107dfe..c90a7e6 100644
--- a/gcc/testsuite/g++.dg/dg.exp
+++ b/gcc/testsuite/g++.dg/dg.exp
@@ -54,6 +54,7 @@ set tests [prune $tests $srcdir/$subdir/guality/*]
 set tests [prune $tests $srcdir/$subdir/simulate-thread/*]
 set tests [prune $tests $srcdir/$subdir/asan/*]
 set tests [prune $tests $srcdir/$subdir/ubsan/*]
+set tests [prune $tests $srcdir/$subdir/tsan/*]
 
 # Main loop.
 g++-dg-runtest $tests $DEFAULT_CXXFLAGS
diff --git a/gcc/testsuite/g++.dg/tsan/tsan.exp b/gcc/testsuite/g++.dg/tsan/tsan.exp
new file mode 100644
index 0000000..164a92e
--- /dev/null
+++ b/gcc/testsuite/g++.dg/tsan/tsan.exp
@@ -0,0 +1,40 @@
+# Copyright (C) 2013 Free Software Foundation, Inc.
+#
+# This file is part of GCC.
+#
+# GCC is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3, or (at your option)
+# any later version.
+#
+# GCC is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with GCC; see the file COPYING3.  If not see
+# <http://www.gnu.org/licenses/>.
+
+# GCC testsuite that uses the `dg.exp' driver.
+
+# Load support procs.
+load_lib g++-dg.exp
+load_lib tsan-dg.exp
+
+if ![check_effective_target_fthread_sanitizer] {
+  return
+}
+
+# Initialize `dg'.
+dg-init
+if [tsan_init] {
+
+# Main loop.
+gcc-dg-runtest [lsort [glob -nocomplain $srcdir/$subdir/*.c $srcdir/c-c++-common/tsan/*.c]] ""
+
+}
+
+# All done.
+tsan_finish
+dg-finish
diff --git a/gcc/testsuite/gcc.dg/tsan/tsan.exp b/gcc/testsuite/gcc.dg/tsan/tsan.exp
new file mode 100644
index 0000000..248cfb1
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/tsan/tsan.exp
@@ -0,0 +1,40 @@
+# Copyright (C) 2013 Free Software Foundation, Inc.
+#
+# This file is part of GCC.
+#
+# GCC is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3, or (at your option)
+# any later version.
+#
+# GCC is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with GCC; see the file COPYING3.  If not see
+# <http://www.gnu.org/licenses/>.
+
+# GCC testsuite that uses the `dg.exp' driver.
+
+# Load support procs.
+load_lib gcc-dg.exp
+load_lib tsan-dg.exp
+
+if ![check_effective_target_fthread_sanitizer] {
+  return
+}
+
+# Initialize `dg'.
+dg-init
+if [tsan_init] {
+
+# Main loop.
+gcc-dg-runtest [lsort [glob -nocomplain $srcdir/$subdir/*.c $srcdir/c-c++-common/tsan/*.c]] ""
+
+}
+
+# All done.
+tsan_finish
+dg-finish
diff --git a/gcc/testsuite/lib/tsan-dg.exp b/gcc/testsuite/lib/tsan-dg.exp
new file mode 100644
index 0000000..f39d8b5
--- /dev/null
+++ b/gcc/testsuite/lib/tsan-dg.exp
@@ -0,0 +1,114 @@
+# Copyright (C) 2013 Free Software Foundation, Inc.
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with GCC; see the file COPYING3.  If not see
+# <http://www.gnu.org/licenses/>.
+
+# Return 1 if compilation with -fsanitize=thread is error-free for trivial
+# code, 0 otherwise.
+
+proc check_effective_target_fthread_sanitizer {} {
+    return [check_no_compiler_messages faddress_sanitizer object {
+	void foo (void) { }
+    } "-fPIE -pie -fsanitize=thread"]
+}
+
+#
+# tsan_link_flags -- compute library path and flags to find libtsan.
+# (originally from g++.exp)
+#
+
+proc tsan_link_flags { paths } {
+    global srcdir
+    global ld_library_path
+    global shlib_ext
+
+    set gccpath ${paths}
+    set flags ""
+
+    set shlib_ext [get_shlib_extension]
+
+    if { $gccpath != "" } {
+      if { [file exists "${gccpath}/libsanitizer/tsan/.libs/libtsan.a"]
+	   || [file exists "${gccpath}/libsanitizer/tsan/.libs/libtsan.${shlib_ext}"] } {
+	  append flags " -B${gccpath}/libsanitizer/tsan/ "
+	  append flags " -L${gccpath}/libsanitizer/tsan/.libs "
+	  append ld_library_path ":${gccpath}/libsanitizer/tsan/.libs"
+      }
+    } else {
+      global tool_root_dir
+
+      set libtsan [lookfor_file ${tool_root_dir} libtsan]
+      if { $libtsan != "" } {
+	  append flags "-L${libtsan} "
+	  append ld_library_path ":${libtsan}"
+      }
+    }
+
+    set_ld_library_path_env_vars
+
+    return "$flags"
+}
+
+#
+# tsan_init -- called at the start of each subdir of tests
+#
+
+proc tsan_init { args } {
+    global TEST_ALWAYS_FLAGS
+    global ALWAYS_CXXFLAGS
+    global TOOL_OPTIONS
+    global tsan_saved_TEST_ALWAYS_FLAGS
+
+    set link_flags ""
+    if ![is_remote host] {
+	if [info exists TOOL_OPTIONS] {
+	    set link_flags "[tsan_link_flags [get_multilibs ${TOOL_OPTIONS}]]"
+	} else {
+	    set link_flags "[tsan_link_flags [get_multilibs]]"
+	}
+    }
+
+    if [info exists TEST_ALWAYS_FLAGS] {
+	set tsan_saved_TEST_ALWAYS_FLAGS $TEST_ALWAYS_FLAGS
+    }
+    if [info exists ALWAYS_CXXFLAGS] {
+	set ALWAYS_CXXFLAGS [concat "{ldflags=$link_flags}" $ALWAYS_CXXFLAGS]
+	set ALWAYS_CXXFLAGS [concat "{additional_flags=-fPIE -pie -fsanitize=thread -g}" $ALWAYS_CXXFLAGS]
+    } else {
+	if [info exists TEST_ALWAYS_FLAGS] {
+	    set TEST_ALWAYS_FLAGS "$link_flags -fPIE -pie -fsanitize=thread -g $TEST_ALWAYS_FLAGS"
+	} else {
+	    set TEST_ALWAYS_FLAGS "$link_flags -fPIE -pie -fsanitize=thread -g"
+	}
+    }
+    if { $link_flags != "" } {
+	return 1
+    }
+    return 0
+}
+
+#
+# tsan_finish -- called at the start of each subdir of tests
+#
+
+proc tsan_finish { args } {
+    global TEST_ALWAYS_FLAGS
+    global tsan_saved_TEST_ALWAYS_FLAGS
+
+    if [info exists tsan_saved_TEST_ALWAYS_FLAGS] {
+	set TEST_ALWAYS_FLAGS $tsan_saved_TEST_ALWAYS_FLAGS
+    } else {
+	unset TEST_ALWAYS_FLAGS
+    }
+}

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