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testsuite/newlib: Check newlib does not touch an assigned std FILE pointer

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Update #3870
This commit is contained in:
Chris Johns
2020-02-14 14:16:17 +11:00
parent 5886462799
commit 3f7ebddfa4
1 changed files with 15 additions and 1 deletions
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16
testsuites/libtests/newlib01/init.c
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@@ -18,6 +18,8 @@
#include <stdio.h>
#include <sys/reent.h>
#include <rtems.h>
#include <rtems/console.h>
#include <rtems/imfs.h>
@@ -63,12 +65,24 @@ static void wait(void)
static void worker_task(rtems_task_argument arg)
{
test_context *ctx = &test_instance;
struct _reent *reent = _REENT;
FILE *output;
char buf[1] = { 'x' };
size_t n;
stdout = fopen(&file_path[0], "r+");
rtems_test_assert(reent->__sdidinit == 0);
output = stdout = fopen(&file_path[0], "r+");
rtems_test_assert(stdout != NULL);
/*
* Check newlib's __sinit does not touch our assigned file pointer.
*/
rtems_test_assert(reent->__sdidinit == 0);
rtems_test_assert(fflush(stdout) == 0);
rtems_test_assert(reent->__sdidinit != 0);
rtems_test_assert(stdout == output);
n = fwrite(&buf[0], sizeof(buf), 1, stdout);
rtems_test_assert(n == 1);