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commit 49051f8ea4551229fa656eba04031af51a5491c5
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Author: Joseph Myers <joseph@codesourcery.com>
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Date: Thu Nov 27 16:01:04 2014 +0000
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Fix libio/bug-ungetwc1.c warning.
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This patch fixes a warning "variable 'wc' set but not used" in
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libio/bug-ungetwc1.c.
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The test didn't verify much about the results of the functions it
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called. This patch makes it check the result of getwc (thereby fixing
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the warning), check end of file does not arrive too late in the getwc
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loop, and check EOF is no longer set after ungetwc.
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Tested for x86_64.
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* libio/bug-ungetwc1.c (do_test): Verify results of getwc and
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feof.
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diff --git a/libio/bug-ungetwc1.c b/libio/bug-ungetwc1.c
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index 8ed6acd175e86858..56a3d336ae89d69f 100644
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--- a/libio/bug-ungetwc1.c
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+++ b/libio/bug-ungetwc1.c
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@@ -53,8 +53,22 @@ do_test (void)
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/* Read from the file. */
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fp = fopen (fname, "r");
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+ size_t i = 0;
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while (!feof (fp))
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- wc = getwc (fp);
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+ {
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+ wc = getwc (fp);
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+ if (i >= sizeof (write_chars))
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+ {
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+ printf ("Did not get end-of-file when expected.\n");
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+ return 1;
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+ }
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+ else if (wc != (write_chars[i] ? write_chars[i] : WEOF))
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+ {
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+ printf ("Unexpected %lu from getwc.\n", (unsigned long int) wc);
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+ return 1;
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+ }
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+ i++;
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+ }
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printf ("\nThe end-of-file indicator is set.\n");
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/* Unget a wide character. */
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@@ -63,7 +77,10 @@ do_test (void)
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/* Check the end-of-file indicator. */
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if (feof (fp))
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- printf ("The end-of-file indicator is still set.\n");
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+ {
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+ printf ("The end-of-file indicator is still set.\n");
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+ return 1;
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+ }
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else
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printf ("The end-of-file flag is cleared.\n");
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