dev-util/ltrace: fix print-instruction-pointer test

print-instruction-pointer occasionally fails when
kernel loads test at address that does not match
last 4 digits of 'objdump' output.

On x86_64 page size is 4096 bytes (0x1000). This gives
only 3 digits of stable address.

The change picks last 3 digits from objdump address.

Signed-off-by: Sergei Trofimovich <[email protected]>
Package-Manager: Portage-2.3.50, Repoman-2.3.11

dev-util/ltrace/files/ltrace-0.7.3-print-test-pie.patch

@@ -0,0 +1,15 @@
+--- a/testsuite/ltrace.minor/print-instruction-pointer.exp
++++ b/testsuite/ltrace.minor/print-instruction-pointer.exp
+@@ -32,6 +32,12 @@ catch "exec sh -c {objdump -d $objdir/$subdir/$binfile | sed -n '/^\[0-9a-fA-F\]
+ catch "exec sh -c {echo \"$output\" | sed -n '2p'| awk -F' ' '{print \$1}'|awk -F: '{print \$1}'}" addr1
+ catch "exec sh -c {echo \"$output\" | sed -n '5p'| awk -F' ' '{print \$1}'|awk -F: '{print \$1}'}" addr2
+
++# Pick at most last 3 digits:
++# PIE binaries randomize address on page level.
++# Let's assume page size is no bigger than 4096 (3 hex digits)
++set addr1 [string range $addr1 3 end]
++set addr2 [string range $addr2 3 end]
++
+ verbose "addr1 = $addr1"
+ verbose "addr2 = $addr2"
+ # Verify the output by checking numbers of print in main.ltrace.

dev-util/ltrace/ltrace-0.7.3_p4.ebuild

@@ -1,4 +1,4 @@
-# Copyright 1999-2018 Gentoo Foundation
+# Copyright 1999-2018 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=5
@@ -33,6 +33,7 @@ src_prepare() {
 	epatch "${FILESDIR}"/${PN}-0.7.3-test-protos.patch #bug 421649
 	epatch "${FILESDIR}"/${PN}-0.7.3-alpha-protos.patch
 	epatch "${FILESDIR}"/${PN}-0.7.3-ia64.patch
+	epatch "${FILESDIR}"/${PN}-0.7.3-print-test-pie.patch
 	sed -i '/^dist_doc_DATA/d' Makefile.am || die
 	eautoreconf
 }