[Beignet] [PATCH] Correct the error llvm link msg copy in function genProgramLinkFromLLVM.

[Zhigang Gong]

LGTM, pushed, thanks.

On Fri, Feb 13, 2015 at 02:38:02PM +0800, Yang Rong wrote:
> Use strncpy to avoid overflow and need return errSize.
> 
> Signed-off-by: Yang Rong <rong.r.yang at intel.com>
> ---
>  backend/src/backend/gen_program.cpp | 7 +++----
>  1 file changed, 3 insertions(+), 4 deletions(-)
> 
> diff --git a/backend/src/backend/gen_program.cpp b/backend/src/backend/gen_program.cpp
> index 65a7ba2..2525825 100644
> --- a/backend/src/backend/gen_program.cpp
> +++ b/backend/src/backend/gen_program.cpp
> @@ -394,10 +394,9 @@ namespace gbe {
>        if (LLVMLinkModules(wrap(dst), wrap(src), 0, &errMsg)) {
>  #endif
>          if (err != NULL && errSize != NULL && stringSize > 0u) {
> -          if(strlen(errMsg) < stringSize )
> -            stringSize = strlen(errMsg);
> -          strcpy(err, errMsg);
> -          err[stringSize+1] = '\0';
> +          strncpy(err, errMsg, stringSize-1);
> +          err[stringSize-1] = '\0';
> +          *errSize = strlen(err);
>          }
>        }
>      }
> -- 
> 1.8.3.2
> 
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