The patch titled
Subject: lib/test_printf.c: add a few number() tests
has been added to the -mm tree. Its filename is
lib-test_printfc-add-a-few-number-tests.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/lib-test_printfc-add-a-few-number-tests.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/lib-test_printfc-add-a-few-number-tests.patch
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------------------------------------------------------
From: Rasmus Villemoes <linux@xxxxxxxxxxxxxxxxxx>
Subject: lib/test_printf.c: add a few number() tests
This adds a few tests to test_number, one of which serves to document
another deviation from POSIX/C99 (printing 0 with an explicit
precision of 0).
Signed-off-by: Rasmus Villemoes <linux@xxxxxxxxxxxxxxxxxx>
Cc: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
Cc: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Joe Perches <joe@xxxxxxxxxxx>
Cc: Kees Cook <keescook@xxxxxxxxxxxx>
Cc: Maurizio Lombardi <mlombard@xxxxxxxxxx>
Cc: Tejun Heo <tj@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
lib/test_printf.c | 24 ++++++++++++++++++++++++
1 file changed, 24 insertions(+)
diff -puN lib/test_printf.c~lib-test_printfc-add-a-few-number-tests lib/test_printf.c
--- a/lib/test_printf.c~lib-test_printfc-add-a-few-number-tests
+++ a/lib/test_printf.c
@@ -158,6 +158,30 @@ test_number(void)
test("0x1234abcd ", "%#-12x", 0x1234abcd);
test(" 0x1234abcd", "%#12x", 0x1234abcd);
test("0|001| 12|+123| 1234|-123|-1234", "%d|%03d|%3d|%+d|% d|%+d|% d", 0, 1, 12, 123, 1234, -123, -1234);
+ test("0|1|1|128|255", "%hhu|%hhu|%hhu|%hhu|%hhu", 0, 1, 257, 128, -1);
+ test("0|1|1|-128|-1", "%hhd|%hhd|%hhd|%hhd|%hhd", 0, 1, 257, 128, -1);
+ test("2015122420151225", "%ho%ho%#ho", 1037, 5282, -11627);
+ /*
+ * POSIX/C99: »The result of converting zero with an explicit
+ * precision of zero shall be no characters.« Hence the output
+ * from the below test should really be "00|0||| ". However,
+ * the kernel's printf also produces a single 0 in that
+ * case. This test case simply documents the current
+ * behaviour.
+ */
+ test("00|0|0|0|0", "%.2d|%.1d|%.0d|%.*d|%1.0d", 0, 0, 0, 0, 0, 0);
+#ifndef __CHAR_UNSIGNED__
+ {
+ /*
+ * Passing a 'char' to a %02x specifier doesn't do
+ * what was presumably the intention when char is
+ * signed and the value is negative. One must either &
+ * with 0xff or cast to u8.
+ */
+ char val = -16;
+ test("0xfffffff0|0xf0|0xf0", "%#02x|%#02x|%#02x", val, val & 0xff, (u8)val);
+ }
+#endif
}
static void __init
_
Patches currently in -mm which might be from linux@xxxxxxxxxxxxxxxxxx are
lib-vsprintfc-pull-out-padding-code-from-dentry_name.patch
lib-vsprintfc-move-string-below-widen_string.patch
lib-vsprintfc-eliminate-potential-race-in-string.patch
lib-vsprintfc-expand-field_width-to-24-bits.patch
lib-vsprintfc-help-gcc-make-number-smaller.patch
lib-vsprintfc-warn-about-too-large-precisions-and-field-widths.patch
lib-kasprintfc-add-sanity-check-to-kvasprintf.patch
lib-test_printfc-dont-bug.patch
lib-test_printfc-check-for-out-of-bound-writes.patch
lib-test_printfc-test-precision-quirks.patch
lib-test_printfc-add-a-few-number-tests.patch
lib-test_printfc-account-for-kvasprintf-tests.patch
lib-test_printfc-add-test-for-large-bitmaps.patch
lib-test_printfc-test-dentry-printing.patch
powerpc-fadump-rename-cpu_online_mask-member-of-struct-fadump_crash_info_header.patch
kernel-cpuc-change-type-of-cpu_possible_bits-and-friends.patch
kernel-cpuc-export-__cpu__mask.patch
drivers-base-cpuc-use-__cpu__mask-directly.patch
kernel-cpuc-eliminate-cpu__mask.patch
kernel-cpuc-make-set_cpu_-static-inlines.patch
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