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commit ccb729df47188874401c655dda8d47b55cddd3b7
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c6d234 |
Author: Joseph Myers <joseph@codesourcery.com>
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c6d234 |
Date: Wed Aug 19 00:50:17 2015 +0000
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c6d234 |
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c6d234 |
Fix -Wundef warnings in login/tst-utmp.c.
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c6d234 |
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c6d234 |
To remove -Wno-error=undef, we need to fix the remaining cases where
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c6d234 |
there are -Wundef warnings in the testsuite. One of those places is
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c6d234 |
in login/tst-utmp.c.
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c6d234 |
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c6d234 |
When included from tst-utmpx.c, <utmpx.h> is included instead of
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<utmp.h>, meaning the _HAVE_UT_* macros are not defined. The test is
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c6d234 |
prepared for them not being defined, in that all the relevant
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c6d234 |
conditionals also include "defined UTMPX". However, they test the
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_HAVE_UT_* macros first, so resulting in -Wundef warnings.
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c6d234 |
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c6d234 |
This patch does the minimal fix of swapping the || operands. This is
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c6d234 |
logically correct - avoiding checking a macro we know will not be
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defined in the case where it is not defined. It won't fix such
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warnings for the case where the toplevel bits/utmp.h is used and most
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c6d234 |
_HAVE_UT_* aren't defined at all even when <utmp.h> is included, but
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c6d234 |
that case doesn't apply to any current glibc configuration. Fixing it
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c6d234 |
would also be tricky in that, while glibc itself consistently uses
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_HAVE_UT_* in ways that would work with 0 instead of undefined,
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c6d234 |
external packages that use the macros expect defined / undefined
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c6d234 |
instead of 1 / 0 (codesearch.debian.net shows uses by util-linux,
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python-utmp, libsys-utmp-perl).
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c6d234 |
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Tested for x86_64.
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* login/tst-utmp.c [_HAVE_UT_TYPE || defined UTMPX]: Change
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conditional to [defined UTMPX || _HAVE_UT_TYPE].
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[_HAVE_UT_TV || defined UTMPX]: Change conditional to [defined
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UTMPX || _HAVE_UT_TV].
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[_HAVE_UT_TV - 0 || defined UTMPX]: Change conditional to [defined
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UTMPX || _HAVE_UT_TV - 0].
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diff --git a/login/tst-utmp.c b/login/tst-utmp.c
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index 7cc39cb2b7ff2dba..84945934e249ca25 100644
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--- a/login/tst-utmp.c
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+++ b/login/tst-utmp.c
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@@ -39,7 +39,7 @@
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#endif
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-#if _HAVE_UT_TYPE || defined UTMPX
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+#if defined UTMPX || _HAVE_UT_TYPE
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/* Prototype for our test function. */
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static int do_test (int argc, char *argv[]);
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@@ -75,7 +75,7 @@ do_prepare (int argc, char *argv[])
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struct utmp entry[] =
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{
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-#if _HAVE_UT_TV || defined UTMPX
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+#if defined UTMPX || _HAVE_UT_TV
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#define UT(a) .ut_tv = { .tv_sec = (a)}
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#else
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#define UT(a) .ut_time = (a)
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@@ -167,7 +167,7 @@ simulate_login (const char *line, const char *user)
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entry[n].ut_pid = (entry_pid += 27);
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entry[n].ut_type = USER_PROCESS;
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strncpy (entry[n].ut_user, user, sizeof (entry[n].ut_user));
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-#if _HAVE_UT_TV - 0 || defined UTMPX
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+#if defined UTMPX || _HAVE_UT_TV - 0
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entry[n].ut_tv.tv_sec = (entry_time += 1000);
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#else
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entry[n].ut_time = (entry_time += 1000);
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@@ -201,7 +201,7 @@ simulate_logout (const char *line)
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{
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entry[n].ut_type = DEAD_PROCESS;
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strncpy (entry[n].ut_user, "", sizeof (entry[n].ut_user));
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-#if _HAVE_UT_TV - 0 || defined UTMPX
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+#if defined UTMPX || _HAVE_UT_TV - 0
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entry[n].ut_tv.tv_sec = (entry_time += 1000);
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#else
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entry[n].ut_time = (entry_time += 1000);
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