From: Zhaoyang Huang <zhaoyang.huang(a)linaro.org&gt; Date: Wed, 1 Jul 2015 15:22:01 +0800 Subject: [PATCH 1/2] prevent segment fault for android built 2 Hi powertop guys, The bellowing patch is generated as the buffer within the function will turn to be null in Android enviroment. I think maybe the reason should be related to bionic libc. the buffer will be turn into NULL after invoking the mbsrtowcs function of bionic libc. Add a condition judgement for that Signed-off-by: Zhaoyang Huang <zhaoyang.huang(a)linaro.org&gt; --- src/lib.cpp | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/lib.cpp b/src/lib.cpp index 88fe5f3..8d1ca9f 100644 --- a/src/lib.cpp +++ b/src/lib.cpp @@ -285,7 +285,7 @@ void align_string(char *buffer, size_t min_sz, size_t max_sz) /* start with mbsrtowcs() local mbstate_t * and * NULL dst pointer*/ sz = mbsrtowcs(NULL, (const char **)&buffer, max_sz, NULL); - if (sz == (size_t)-1) { + if ((sz == (size_t)-1) && (NULL != buffer)) { buffer[min_sz] = 0x00; return; } -- 1.7.9.5