diff --git a/test/issues/1111/C1111.sh b/test/issues/1111/C1111.sh
new file mode 100644
index 00000000..1256310a
--- /dev/null
+++ b/test/issues/1111/C1111.sh
@@ -0,0 +1,65 @@
+#!/bin/sh
+BIN=
+SBIN=
+OSTEST=
+BOOTPARAM="-c 1-7,9-15,17-23,25-31 -m 10G@0,10G@1 -r 1-7:0+9-15:8+17-23:16+25-31:24"
+
+if [ -f ../../../config.h ]; then
+	str=`grep "^#define BINDIR " ../../../config.h | head -1 | sed 's/^#define BINDIR /BINDIR=/'`
+	eval $str
+fi
+if [ "x$BINDIR" = x ];then
+	BINDIR="$BIN"
+fi
+
+if [ -f ../../../Makefile ]; then
+	str=`grep ^SBINDIR ../../../Makefile | head -1 | sed 's/ //g'`
+	eval $str
+fi
+if [ "x$SBINDIR" = x ];then
+	SBINDIR="$SBIN"
+fi
+
+if [ -f $HOME/ostest/bin/test_mck ]; then
+	OSTESTDIR=$HOME/ostest/
+fi
+if [ "x$OSTESTDIR" = x ]; then
+	OSTESTDIR="$OSTEST"
+fi
+
+if [ ! -x $SBINDIR/mcstop+release.sh ]; then
+	echo mcstop+release: not found >&2
+	exit 1
+fi
+echo -n "mcstop+release.sh ... "
+sudo $SBINDIR/mcstop+release.sh
+echo "done"
+
+if [ ! -x $SBINDIR/mcreboot.sh ]; then
+	echo mcreboot: not found >&2
+	exit 1
+fi
+echo -n "mcreboot.sh $BOOTPARAM ... "
+sudo $SBINDIR/mcreboot.sh $BOOTPARAM
+echo "done"
+
+if [ ! -x $BINDIR/mcexec ]; then
+	echo mcexec: not found >&2
+	exit 1
+fi
+
+echo "*** RT_001 start *******************************"
+sudo $BINDIR/mcexec $OSTESTDIR/bin/test_mck -s rt_sigaction -n 5 2>&1 | tee ./RT_001.txt
+if grep "RESULT: ok" ./RT_001.txt > /dev/null 2>&1 ; then
+	echo "*** RT_001: PASSED"
+else
+	echo "*** RT_001: FAILED"
+fi
+echo ""
+
+sudo $BINDIR/mcexec ./CT_001
+sudo $BINDIR/mcexec ./CT_002
+sudo $BINDIR/mcexec ./CT_003
+sudo $BINDIR/mcexec ./CT_004
+sudo $BINDIR/mcexec ./CT_005
+
diff --git a/test/issues/1111/CT_001.c b/test/issues/1111/CT_001.c
new file mode 100644
index 00000000..2c34d74a
--- /dev/null
+++ b/test/issues/1111/CT_001.c
@@ -0,0 +1,50 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <signal.h>
+#include "./test_chk.h"
+
+#define TEST_NAME "CT_001"
+
+int handled_cnt;
+
+void test_handler(int sig)
+{
+	handled_cnt++;
+}
+
+int main(int argc, char **argv)
+{
+	int rc = 0;
+	int status;
+	int tmp_flag = 0;
+	struct sigaction sa, old_act;
+
+	printf("*** %s start *******************************\n", TEST_NAME);
+	handled_cnt = 0;
+
+	sa.sa_handler = test_handler;
+	sa.sa_flags = SA_RESETHAND;
+
+	rc = sigaction(SIGUSR1, &sa, NULL);
+	OKNG(rc != 0, "sigaction with SA_RESETHAND");
+
+	rc = sigaction(SIGUSR1, NULL, &old_act);
+	OKNG(rc != 0, "sigaction to get current action");
+
+	if (old_act.sa_handler == test_handler &&
+	    old_act.sa_flags & SA_RESETHAND) {
+		tmp_flag = 1;
+	}
+	OKNG(tmp_flag != 1, "check current act");
+
+	printf("*** %s PASSED\n\n", TEST_NAME);
+
+	return 0;
+
+fn_fail:
+	printf("*** %s FAILED\n\n", TEST_NAME);
+
+	return -1;
+}
diff --git a/test/issues/1111/CT_002.c b/test/issues/1111/CT_002.c
new file mode 100644
index 00000000..46615013
--- /dev/null
+++ b/test/issues/1111/CT_002.c
@@ -0,0 +1,53 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <signal.h>
+#include "./test_chk.h"
+
+#define TEST_NAME "CT_002"
+
+int handled_cnt;
+
+void test_handler(int sig)
+{
+	handled_cnt++;
+}
+
+int main(int argc, char **argv)
+{
+	int rc = 0;
+	int status;
+	int tmp_flag = 0;
+	struct sigaction sa, old_act;
+
+	printf("*** %s start *******************************\n", TEST_NAME);
+	handled_cnt = 0;
+
+	sa.sa_handler = test_handler;
+	sa.sa_flags = SA_RESETHAND;
+
+	rc = sigaction(SIGUSR1, &sa, NULL);
+	OKNG(rc != 0, "sigaction with SA_RESETHAND");
+
+	printf("   send 1st SIGUSR1\n");
+	kill(getpid(), SIGUSR1);
+	OKNG(handled_cnt != 1, "invoked test_handler");
+
+	rc = sigaction(SIGUSR1, NULL, &old_act);
+	OKNG(rc != 0, "sigaction to get current action");
+
+	if (old_act.sa_handler == SIG_DFL) {
+		tmp_flag = 1;
+	}
+	OKNG(tmp_flag != 1, "check current act (after reset)");
+
+	printf("*** %s PASSED\n\n", TEST_NAME);
+
+	return 0;
+
+fn_fail:
+	printf("*** %s FAILED\n\n", TEST_NAME);
+
+	return -1;
+}
diff --git a/test/issues/1111/CT_003.c b/test/issues/1111/CT_003.c
new file mode 100644
index 00000000..dacc11aa
--- /dev/null
+++ b/test/issues/1111/CT_003.c
@@ -0,0 +1,47 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <signal.h>
+#include "./test_chk.h"
+
+#define TEST_NAME "CT_003"
+
+int handled_cnt;
+
+void test_handler(int sig)
+{
+	handled_cnt++;
+}
+
+int main(int argc, char **argv)
+{
+	int rc = 0;
+	int status;
+	int tmp_flag = 0;
+	struct sigaction sa, old_act;
+
+	printf("*** %s start *******************************\n", TEST_NAME);
+	handled_cnt = 0;
+
+	rc = sigaction(0, &sa, NULL);
+	OKNG(rc != -1, "sigaction 0 failed");
+
+	rc = sigaction(_NSIG, &sa, NULL);
+	OKNG(rc != -1, "sigaction _NSIG failed");
+
+	rc = sigaction(SIGKILL, &sa, NULL);
+	OKNG(rc != -1, "sigaction SIGKILL failed");
+
+	rc = sigaction(SIGSTOP, &sa, NULL);
+	OKNG(rc != -1, "sigaction SIGSTOP failed");
+
+	printf("*** %s PASSED\n\n", TEST_NAME);
+
+	return 0;
+
+fn_fail:
+	printf("*** %s FAILED\n\n", TEST_NAME);
+
+	return -1;
+}
diff --git a/test/issues/1111/CT_004.c b/test/issues/1111/CT_004.c
new file mode 100644
index 00000000..9212fa95
--- /dev/null
+++ b/test/issues/1111/CT_004.c
@@ -0,0 +1,44 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <signal.h>
+#include "./test_chk.h"
+
+#define TEST_NAME "CT_004"
+
+int main(int argc, char **argv)
+{
+	int rc = 0;
+	int status;
+	int tmp_flag = 0;
+	struct sigaction old_act;
+
+	printf("*** %s start *******************************\n", TEST_NAME);
+
+	rc = sigaction(SIGKILL, NULL, &old_act);
+	OKNG(rc != 0, "sigaction to get SIGKILL action");
+
+	if (old_act.sa_handler == SIG_DFL) {
+		tmp_flag = 1;
+	}
+	OKNG(tmp_flag != 1, "check SIGKILL act");
+
+	rc = sigaction(SIGSTOP, NULL, &old_act);
+	OKNG(rc != 0, "sigaction to get SIGSTOP action");
+
+	tmp_flag = 0;
+	if (old_act.sa_handler == SIG_DFL) {
+		tmp_flag = 1;
+	}
+	OKNG(tmp_flag != 1, "check SIGSTOP act");
+
+	printf("*** %s PASSED\n\n", TEST_NAME);
+
+	return 0;
+
+fn_fail:
+	printf("*** %s FAILED\n\n", TEST_NAME);
+
+	return -1;
+}
diff --git a/test/issues/1111/CT_005.c b/test/issues/1111/CT_005.c
new file mode 100644
index 00000000..92f1734b
--- /dev/null
+++ b/test/issues/1111/CT_005.c
@@ -0,0 +1,37 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <signal.h>
+#include "./test_chk.h"
+
+#define TEST_NAME "CT_005"
+
+int main(int argc, char **argv)
+{
+	int rc = 0;
+	int status;
+
+	printf("*** %s start *******************************\n", TEST_NAME);
+
+	rc = sigaction(SIGUSR1, NULL, NULL);
+	OKNG(rc != 0, "SIGUSR1 is valid");
+
+	rc = sigaction(SIGKILL, NULL, NULL);
+	OKNG(rc != 0, "SIGKILL is valid");
+
+	rc = sigaction(SIGSTOP, NULL, NULL);
+	OKNG(rc != 0, "SIGSTOP is valid");
+
+	rc = sigaction(_NSIG, NULL, NULL);
+	OKNG(rc != -1, "_NSIG is invalid");
+
+	printf("*** %s PASSED\n\n", TEST_NAME);
+
+	return 0;
+
+fn_fail:
+	printf("*** %s FAILED\n\n", TEST_NAME);
+
+	return -1;
+}
diff --git a/test/issues/1111/Makefile b/test/issues/1111/Makefile
new file mode 100644
index 00000000..c863d42e
--- /dev/null
+++ b/test/issues/1111/Makefile
@@ -0,0 +1,29 @@
+CC = gcc
+TARGET=CT_001 CT_002 CT_003 CT_004 CT_005
+
+CPPFLAGS =
+LDFLAGS =
+
+all: $(TARGET)
+
+CT_001: CT_001.c
+	$(CC) -o $@ $^ $(LDFLAGS)
+
+CT_002: CT_002.c
+	$(CC) -o $@ $^ $(LDFLAGS)
+
+CT_003: CT_003.c
+	$(CC) -o $@ $^ $(LDFLAGS)
+
+CT_004: CT_004.c
+	$(CC) -o $@ $^ $(LDFLAGS)
+
+CT_005: CT_005.c
+	$(CC) -o $@ $^ $(LDFLAGS)
+
+test: all
+	@sh ./C1111.sh
+
+clean:
+	rm -f $(TARGET) *.o
+
diff --git a/test/issues/1111/README b/test/issues/1111/README
new file mode 100644
index 00000000..80e293ad
--- /dev/null
+++ b/test/issues/1111/README
@@ -0,0 +1,44 @@
+【Issue#1111 動作確認】
+□ テスト内容
+1. Issueで報告された再現プログラムでの確認
+RT_001: ostest-rt_sigaction.005 による確認
+	テストが正常に終了し、「RESULT: ok」が出力される
+
+2. 既存のsigaction機能に影響がないことを確認
+CT_001: 設定中のハンドラ情報の取得 (上書き時)
+	1. SIG_RESETHANDを指定したsigaction()でSIG_USR1にハンドラを設定
+	2. sigaction(SIGUSR1, NULL, &act) で設定情報を取得できる
+	3. SIG_RESETHANDを指定しないsigaction()でSIG_USR1にデフォルトハンドラを設定
+	4. sigaction(SIGUSR1, NULL, &act) で3.で指定した設定情報を取得できる
+
+CT_002: 設定中のハンドラ情報の取得 (デフォルトに戻った時)
+	1. SIG_RESETHANDを指定したsigaction()でSIG_USR1にハンドラを設定
+	2. 自身にSIGUSR1を送る
+	3. 1.で登録したハンドラが呼び出される
+	4. sigaction(SIGUSR1, NULL, &act) で設定情報を取得できる
+
+CT_003: 不正なsig_numへのハンドラ登録
+	1. 範囲外(上限、下限)のsignumへのハンドラ登録が失敗する
+	2. SIGKILL, SIGSTOPへのハンドラ登録が失敗する
+
+CT_004: SIGKILL, SIGSTOPのハンドラ情報の取得
+	1. sigaction(SIGKILL, NULL, &act) で設定情報を取得できる
+	2. sigaction(SIGSTOP, NULL, &act) で設定情報を取得できる
+
+CT_005: sig_numの有効確認
+	1. sigaction(SIGUSR1, NULL, NULL) が成功する（有効）
+	2. sigaction(SIGKILL, NULL, NULL) が成功する（有効）
+	3. sigaction(SIGSTOP, NULL, NULL) が成功する（有効）
+	4. sigaction(_NSIG, NULL, NULL) が失敗する（無効）
+
+□ 実行手順
+$ make test
+
+実行できない場合は、C1111.shの以下の行を適切に書き換えた後に実行。
+BIN=          mcexec が存在するパス
+SBIN=         mcreboot.sh が存在するパス
+OSTEST=       OSTESTが存在するパス
+
+□ 実行結果
+result.log 参照。
+すべての項目をPASSしていることを確認。
diff --git a/test/issues/1111/result.log b/test/issues/1111/result.log
new file mode 100644
index 00000000..e8da9629
--- /dev/null
+++ b/test/issues/1111/result.log
@@ -0,0 +1,45 @@
+*** RT_001 start *******************************
+TEST_SUITE: rt_sigaction
+TEST_NUMBER: 5
+ARGS:
+sigaction(-1) = -1 (errno=22)
+sigaction(65) = -1 (errno=22)
+sigaction(9) = -1 (errno=22)
+sigaction(19) = -1 (errno=22)
+RESULT: ok
+*** RT_001: PASSED
+
+*** CT_001 start *******************************
+ [OK] sigaction with SA_RESETHAND
+ [OK] sigaction to get current action
+ [OK] check current act
+*** CT_001 PASSED
+
+*** CT_002 start *******************************
+ [OK] sigaction with SA_RESETHAND
+   send 1st SIGUSR1
+ [OK] invoked test_handler
+ [OK] sigaction to get current action
+ [OK] check current act (after reset)
+*** CT_002 PASSED
+
+*** CT_003 start *******************************
+ [OK] sigaction 0 failed
+ [OK] sigaction _NSIG failed
+ [OK] sigaction SIGKILL failed
+ [OK] sigaction SIGSTOP failed
+*** CT_003 PASSED
+
+*** CT_004 start *******************************
+ [OK] sigaction to get SIGKILL action
+ [OK] check SIGKILL act
+ [OK] sigaction to get SIGSTOP action
+ [OK] check SIGSTOP act
+*** CT_004 PASSED
+
+*** CT_005 start *******************************
+ [OK] SIGUSR1 is valid
+ [OK] SIGKILL is valid
+ [OK] SIGSTOP is valid
+ [OK] _NSIG is invalid
+*** CT_005 PASSED
diff --git a/test/issues/1111/test_chk.h b/test/issues/1111/test_chk.h
new file mode 100644
index 00000000..4cef42e8
--- /dev/null
+++ b/test/issues/1111/test_chk.h
@@ -0,0 +1,23 @@
+#ifndef HEADER_TEST_CHK_H
+#define HEADER_TEST_CHK_H
+
+#define CHKANDJUMP(cond, ...) do {\
+		if (cond) {\
+			fprintf(stderr, " [NG] ");\
+			fprintf(stderr, __VA_ARGS__);\
+			fprintf(stderr, " failed\n");\
+			goto fn_fail;\
+		} \
+	} while (0)
+
+#define OKNG(cond, ...) do {\
+		if (cond) {\
+			CHKANDJUMP(cond, __VA_ARGS__);\
+		} else {\
+			fprintf(stdout, " [OK] ");\
+			fprintf(stdout, __VA_ARGS__);\
+			fprintf(stdout, "\n");\
+		} \
+	} while (0)
+
+#endif