[LTP] [PATCH v2] newlib_tests/test_exec.c: Fix compiler error before glibc v2.11

[Xiao Yang <yangx.jy@cn.fujitsu.com>]

Hi,

Could you help me push the v2 patch? Thanks a lot.  :-) 

Thanks,
Xiao Yang

On 2018/08/27 8:05, Xiao Yang wrote:

> Before glibc v2.11, execvpe() was not introduced and resulted in
> compiler error, so we replace execvpe() with execve() and update
> test-writing-guidelines.txt.
>
> Signed-off-by: Xiao Yang <yangx.jy@cn.fujitsu.com>
> ---
>  doc/test-writing-guidelines.txt | 8 ++++++--
>  lib/newlib_tests/test_exec.c    | 8 ++++++--
>  2 files changed, 12 insertions(+), 4 deletions(-)
>
> diff --git a/doc/test-writing-guidelines.txt b/doc/test-writing-guidelines.txt
> index a169724..0b89cf9 100644
> --- a/doc/test-writing-guidelines.txt
> +++ b/doc/test-writing-guidelines.txt
> @@ -697,14 +697,18 @@ a non zero exit code.
>  -------------------------------------------------------------------------------
>  /* test.c */
>  #define _GNU_SOURCE
> -#include <stdlib.h>
> +#include <unistd.h>
>  #include "tst_test.h"
>  
>  static void do_test(void)
>  {
>  	char *const argv[] = {"test_exec_child", NULL};
> +	char path[4096];
>  
> -	execvpe(argv[0], argv, environ);
> +	if (tst_get_path("test_exec_child", path, sizeof(path)))
> +		tst_brk(TCONF, "Couldn't find test_exec_child in $PATH");
> +
> +	execve(path, argv, environ);
>  
>  	tst_res(TBROK | TERRNO, "EXEC!");
>  }
> diff --git a/lib/newlib_tests/test_exec.c b/lib/newlib_tests/test_exec.c
> index 8aef621..2c86568 100644
> --- a/lib/newlib_tests/test_exec.c
> +++ b/lib/newlib_tests/test_exec.c
> @@ -25,14 +25,18 @@
>   */
>  
>  #define _GNU_SOURCE
> -#include <stdlib.h>
> +#include <unistd.h>
>  #include "tst_test.h"
>  
>  static void do_test(void)
>  {
>  	char *const argv[] = {"test_exec_child", NULL};
> +	char path[4096];
>  
> -	execvpe(argv[0], argv, environ);
> +	if (tst_get_path("test_exec_child", path, sizeof(path)))
> +		tst_brk(TCONF, "Couldn't find test_exec_child in $PATH");
> +
> +	execve(path, argv, environ);
>  
>  	tst_res(TBROK | TERRNO, "EXEC!");
>  }