summaryrefslogtreecommitdiff
path: root/stdio/test-fwrite.c
diff options
context:
space:
mode:
Diffstat (limited to 'stdio/test-fwrite.c')
-rw-r--r--stdio/test-fwrite.c68
1 files changed, 68 insertions, 0 deletions
diff --git a/stdio/test-fwrite.c b/stdio/test-fwrite.c
new file mode 100644
index 0000000000..cc6cdf038e
--- /dev/null
+++ b/stdio/test-fwrite.c
@@ -0,0 +1,68 @@
+#include <stdio.h>
+#include <string.h>
+
+int
+main ()
+{
+ FILE *f = tmpfile ();
+ char obuf[99999], ibuf[sizeof obuf];
+ char *line;
+ size_t linesz;
+
+ if (! f)
+ {
+ perror ("tmpfile");
+ return 1;
+ }
+
+ if (fputs ("line\n", f) == EOF)
+ {
+ perror ("fputs");
+ return 1;
+ }
+
+ memset (obuf, 'z', sizeof obuf);
+ memset (ibuf, 'y', sizeof ibuf);
+
+ if (fwrite (obuf, sizeof obuf, 1, f) != 1)
+ {
+ perror ("fwrite");
+ return 1;
+ }
+
+ rewind (f);
+
+ line = NULL;
+ linesz = 0;
+ if (getline (&line, &linesz, f) != 5)
+ {
+ perror ("getline");
+ return 1;
+ }
+ if (strcmp (line, "line\n"))
+ {
+ puts ("Lines differ. Test FAILED!");
+ return 1;
+ }
+
+ if (fread (ibuf, sizeof ibuf, 1, f) != 1)
+ {
+ perror ("fread");
+ return 1;
+ }
+
+ if (memcmp (ibuf, obuf, sizeof ibuf))
+ {
+ puts ("Buffers differ. Test FAILED!");
+ return 1;
+ }
+
+ asprintf (&line, "\
+GDB is free software and you are welcome to distribute copies of it\n\
+ under certain conditions; type \"show copying\" to see the conditions.\n\
+There is absolutely no warranty for GDB; type \"show warranty\" for details.\n\
+");
+
+ puts ("Test succeeded.");
+ return 0;
+}