Prevent seg faults in Android

The mbsrtowcs() in Android seems to change the content of
source pointer to 0x00. So save a copy of the source
string so we can manipulate it later, preventing segfaults.

Signed-off-by: Daniel Leung <daniel.leung@linux.intel.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/src/lib.cpp b/src/lib.cpp
index 6c7f594..f65e447 100644
--- a/src/lib.cpp
+++ b/src/lib.cpp
@@ -278,6 +278,7 @@ string read_sysfs_string(const char *format, const char *param)
 void align_string(char *buffer, size_t min_sz, size_t max_sz)
 {
 	size_t sz;
+	char *buf = buffer;
 
 	/** mbsrtowcs() allows NULL dst and zero sz,
 	 * comparing to mbstowcs(), which causes undefined
@@ -291,7 +292,7 @@ void align_string(char *buffer, size_t min_sz, size_t max_sz)
 		return;
 	}
 	while (sz < min_sz) {
-		strcat(buffer, " ");
+		strcat(buf, " "); 
 		sz++;
 	}
 }