This patch adds tests for -Wstring-plus-int.

gcc/ChangeLog:

2017-06-12  Xi Ruoyao  <ryxi@stu.xidian.edu.cn>

	* testsuite/c-c++-common/Wstring-plus-int.c: New test.
	* testsuite/g++.dg/Wstring-plus-int-1.C: Ditto.
	* testsuite/g++.dg/Wstring-plus-int-2.C: Ditto.
---
 gcc/testsuite/c-c++-common/Wstring-plus-int.c | 26 ++++++++++++++++++++++++++
 gcc/testsuite/g++.dg/Wstring-plus-int-1.C     |  9 +++++++++
 gcc/testsuite/g++.dg/Wstring-plus-int-2.C     | 10 ++++++++++
 3 files changed, 45 insertions(+)
 create mode 100644 gcc/testsuite/c-c++-common/Wstring-plus-int.c
 create mode 100644 gcc/testsuite/g++.dg/Wstring-plus-int-1.C
 create mode 100644 gcc/testsuite/g++.dg/Wstring-plus-int-2.C


-- 
Xi Ruoyao <ryxi@stu.xidian.edu.cn>
School of Aerospace Science and Technology, Xidian University