+2012-06-22 Bruno Haible <bruno@clisp.org>
+
+ fbufmode test: Don't test unportable behaviour.
+ * tests/test-fbufmode.c (test_mode): New function, extracted from main.
+ (main): Invoke it three times.
+ Reported by Szabolcs Nagy <nsz@port70.net>
+ and Rich Felker <dalias@aerifal.cx>.
+
2012-06-21 Bruno Haible <bruno@clisp.org>
gnulib-tool: Refactor inctests variable.
#define TESTFILE "t-fbufmode.tmp"
-int
-main ()
+/* ISO C99 disallows more than one setvbuf call on a given stream,
+ and HP-UX 11 and musl libc indeed don't support such use of setvbuf.
+ Therefore allocate a new stream for each possible mode value. */
+static int
+test_mode (int mode)
{
FILE *fp;
char buf[5];
- /* Create a file with some contents. */
- fp = fopen (TESTFILE, "w");
- if (fp == NULL)
- goto skip;
- if (fwrite ("foobarsh", 1, 8, fp) < 8)
- goto skip;
- if (fclose (fp))
- goto skip;
-
/* Open it for reading. */
fp = fopen (TESTFILE, "r");
- if (setvbuf (fp, NULL, _IONBF, 0))
- goto skip;
- ASSERT (fbufmode (fp) == _IONBF);
-
- /* This setvbuf call can fail, e.g. on HP-UX 11. */
- if (setvbuf (fp, buf, _IOLBF, 5) == 0)
+ switch (mode)
{
+ case _IONBF:
+ ASSERT (setvbuf (fp, NULL, _IONBF, 0) == 0);
+ ASSERT (fbufmode (fp) == _IONBF);
+ break;
+
+ case _IOLBF:
+ ASSERT (setvbuf (fp, buf, _IOLBF, 5) == 0);
/* mingw's setvbuf implements _IOLBF the same way as _IOFBF. */
ASSERT (fbufmode (fp) == _IOLBF
|| fbufmode (fp) == _IOFBF);
- }
+ break;
- /* This setvbuf call can fail, e.g. on HP-UX 11. */
- if (setvbuf (fp, buf, _IOFBF, 5) == 0)
- {
+ case _IOFBF:
+ ASSERT (setvbuf (fp, buf, _IOFBF, 5) == 0);
ASSERT (fbufmode (fp) == _IOFBF);
+ break;
+
+ default:
+ break;
}
fclose (fp);
return 0;
+}
+
+int
+main ()
+{
+ int ret;
+
+ /* Create a file with some contents. */
+ {
+ FILE *fp;
+
+ fp = fopen (TESTFILE, "w");
+ if (fp == NULL)
+ goto skip;
+ if (fwrite ("foobarsh", 1, 8, fp) < 8)
+ goto skip;
+ if (fclose (fp))
+ goto skip;
+ }
+
+ ret = test_mode (_IONBF);
+ if (ret != 0)
+ goto fail;
+
+ ret = test_mode (_IOLBF);
+ if (ret != 0)
+ goto fail;
+
+ ret = test_mode (_IOFBF);
+ if (ret != 0)
+ goto fail;
+
+ return 0;
+
+ fail:
+ return ret;
skip:
fprintf (stderr, "Skipping test: file operations failed.\n");