diff options
author | Ian Moffett <ian@osmora.org> | 2024-03-07 17:28:00 -0500 |
---|---|---|
committer | Ian Moffett <ian@osmora.org> | 2024-03-07 17:28:32 -0500 |
commit | bd5969fc876a10b18613302db7087ef3c40f18e1 (patch) | |
tree | 7c2b8619afe902abf99570df2873fbdf40a4d1a1 /lib/mlibc/tests/ansi/freopen.c | |
parent | a95b38b1b92b172e6cc4e8e56a88a30cc65907b0 (diff) |
lib: Add mlibc
Signed-off-by: Ian Moffett <ian@osmora.org>
Diffstat (limited to 'lib/mlibc/tests/ansi/freopen.c')
-rw-r--r-- | lib/mlibc/tests/ansi/freopen.c | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/lib/mlibc/tests/ansi/freopen.c b/lib/mlibc/tests/ansi/freopen.c new file mode 100644 index 0000000..c91577f --- /dev/null +++ b/lib/mlibc/tests/ansi/freopen.c @@ -0,0 +1,49 @@ +#include <assert.h> +#include <stdio.h> +#include <string.h> + +#ifdef USE_HOST_LIBC +#define TEST_FILE "freopen-host-libc.tmp" +#else +#define TEST_FILE "freopen.tmp" +#endif + +int main() { + FILE *file = fopen(TEST_FILE, "w"); + assert(file); + + assert(freopen("/dev/null", "w", file)); + + char str[] = "mlibc freopen test"; + fwrite(str, 1, sizeof(str) - 1, file); + fflush(file); + fclose(file); + + file = fopen(TEST_FILE, "r"); + assert(file); + + char buf[sizeof(str)]; + memset(buf, 0, sizeof(buf)); + int ret = fread(buf, 1, sizeof(buf) - 1, file); + fprintf(stderr, "ret %d\n", ret); + assert(ret == 0); + fclose(file); + + file = fopen("/dev/null", "w"); + assert(file); + + assert(freopen(TEST_FILE, "w", file)); + fwrite(str, 1, sizeof(str) - 1, file); + fflush(file); + fclose(file); + + memset(buf, 0, sizeof(buf)); + file = fopen(TEST_FILE, "r"); + assert(fread(buf, 1, sizeof(buf) - 1, file)); + + fprintf(stderr, "buffer content '%s'\n", buf); + assert(!strcmp(buf, "mlibc freopen test")); + fclose(file); + + return 0; +} |