GNU C Library master sources branch master updated. glibc-2.29.9000-29-gf1ac745

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http://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=f1ac7455831546e5dca0ed98fe8af2686fae7ce6

commit f1ac7455831546e5dca0ed98fe8af2686fae7ce6
Author: Florian Weimer <fweimer@redhat.com>
Date:   Tue Feb 5 13:01:08 2019 +0100

    arm: Use "nr" constraint for Systemtap probes [BZ #24164]
    
    With the default "nor" constraint, current GCC will use the "o"
    constraint for constants, after emitting the constant to memory.  That
    results in unparseable Systemtap probe notes such as "-4@.L1052".
    Removing the "o" alternative and using "nr" instead avoids this.

diff --git a/ChangeLog b/ChangeLog
index 17d53b1..ba5998c 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,14 @@
+2019-02-05  Florian Weimer  <fweimer@redhat.com>
+
+	[BZ #24164]
+	arm: Use "nr" constraint for Systemtap probes, to avoid the
+	compiler using memory operands for constants, due to the "o"
+	alternative in the default "nor" constraint.
+	* include/stap-probe.h [USE_STAP_PROBE]: Include
+	<stap-probe-machine.h>
+	* sysdeps/generic/stap-probe-machine.h: New file.
+	* sysdeps/arm/stap-probe-machine.h: Likewise.
+
 2019-02-04  Joseph Myers  <joseph@codesourcery.com>
 
 	* malloc/malloc.c (tcache_get): Compare tcache->counts[tc_idx]
diff --git a/include/stap-probe.h b/include/stap-probe.h
index c53dd86..8c26292 100644
--- a/include/stap-probe.h
+++ b/include/stap-probe.h
@@ -21,6 +21,7 @@
 
 #ifdef USE_STAP_PROBE
 
+# include <stap-probe-machine.h>
 # include <sys/sdt.h>
 
 /* Our code uses one macro LIBC_PROBE (name, n, arg1, ..., argn).
diff --git a/sysdeps/arm/stap-probe-machine.h b/sysdeps/arm/stap-probe-machine.h
new file mode 100644
index 0000000..d27ca22
--- /dev/null
+++ b/sysdeps/arm/stap-probe-machine.h
@@ -0,0 +1,22 @@
+/* Macros for customizing Systemtap <sys/sdt.h>.  Arm version.
+   Copyright (C) 2019 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+/* The default "nor" constraint produces unparseable memory references
+   for constants.  Omit the problematic "o" constraint.  See bug 24164
+   and GCC PR 89146.  */
+#define STAP_SDT_ARG_CONSTRAINT nr
diff --git a/sysdeps/generic/stap-probe-machine.h b/sysdeps/generic/stap-probe-machine.h
new file mode 100644
index 0000000..2e5790c
--- /dev/null
+++ b/sysdeps/generic/stap-probe-machine.h
@@ -0,0 +1,19 @@
+/* Macros for customizing Systemtap <sys/sdt.h>.  Generic version.
+   Copyright (C) 2019 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+/* By default, there are no customizations.  */

-----------------------------------------------------------------------

Summary of changes:
 ChangeLog                                          |   11 +++++++++++
 include/stap-probe.h                               |    1 +
 .../arm/stap-probe-machine.h                       |   14 +++++---------
 .../stap-probe-machine.h}                          |    5 ++---
 4 files changed, 19 insertions(+), 12 deletions(-)
 copy support/xpthread_rwlock_destroy.c => sysdeps/arm/stap-probe-machine.h (74%)
 copy sysdeps/{x86_64/x32/tst-size_t-wmemcmp.c => generic/stap-probe-machine.h} (87%)


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