treewide: replace "sed -r" with "sed -E"

Use -E option instead of -r to enable use extended regular expression
syntax in sed expressions.  It has been supported for years by GNU sed,
and is now included in POSIX.

Link: https://www.austingroupbugs.net/view.php?id=528
Resolves: https://github.com/strace/strace/issues/216

19 files changed, 38 insertions, 38 deletions

diff --git a/attic/qemu_multiarch_testing/make-hdc-img.sh b/attic/qemu_multiarch_testing/make-hdc-img.sh
index 3c35f4ead..1c740ba08 100755
--- a/attic/qemu_multiarch_testing/make-hdc-img.sh
+++ b/attic/qemu_multiarch_testing/make-hdc-img.sh
@@ -17,7 +17,7 @@ cleanup()
 trap 'cleanup $?' EXIT
 trap 'cleanup 1' HUP PIPE INT QUIT TERM
 
-size=$(du -ks hdc.dir | sed -rn 's/^([0-9]+).*/\1/p')
+size=$(du -ks hdc.dir | sed -En 's/^([0-9]+).*/\1/p')
 [ "$size" -gt 0 ]
 
 rm -f hdc.img
diff --git a/maint/gen_xlat_defs.sh b/maint/gen_xlat_defs.sh
index 9f90d9284..8ccb06599 100755
--- a/maint/gen_xlat_defs.sh
+++ b/maint/gen_xlat_defs.sh
@@ -97,7 +97,7 @@ printf "/* Generated by %s -f '%s' -p '%s' -c '%s' -a '%s' */\\n" \
 	"$0" "$VAL_PRINT_FMT" "$REGEXP_PATTERN" \
 	"$COMMON_DEFS_GLOB_PATTERN" "$ARCH_DEFS_FILE"
 
-sed -rn '/^\/\* Generated by .*\*\//d;s/^((# .*|'"$comment_re"'|'"$REGEXP_PATTERN"'[^[:space:]]*).*)?$/\2/p' |
+sed -En '/^\/\* Generated by .*\*\//d;s/^((# .*|'"$comment_re"'|'"$REGEXP_PATTERN"'[^[:space:]]*).*)?$/\2/p' |
 uniq |
 while read name_ rest; do
 	# Empty lines, comments, and "# " directives are passed verbatim.
@@ -109,7 +109,7 @@ while read name_ rest; do
 			printf '%s\n' "$name_ $rest"
 			continue ;;
 	esac
-	sed -rn 's/#[[:space:]]*define[[:space:]]+('"$name_"')[[:space:]]+([x[:xdigit:]]+).*$/\2\t\1/p' \
+	sed -En 's/#[[:space:]]*define[[:space:]]+('"$name_"')[[:space:]]+([x[:xdigit:]]+).*$/\2\t\1/p' \
 		$LINUX_SRC/include/uapi/$COMMON_DEFS_GLOB_PATTERN |
 	sort -n | {
 		def=
@@ -125,7 +125,7 @@ while read name_ rest; do
 
 		grep -oEH '#[[:space:]]*define[[:space:]]+'"$name"'[[:space:]]+(0x[[:xdigit:]]+|[[:digit:]]+)' \
 		    $LINUX_SRC/arch/*/include/uapi/$ARCH_DEFS_FILE |
-		sed -rn 's|^[^#]*/arch/([^/]+)/include/uapi/[^:]*:#[[:space:]]*define[[:space:]]+'"$name"'[[:space:]]+([^[:space:]]+)([[:space:]].*)?$|\1\t\2|p' |
+		sed -En 's|^[^#]*/arch/([^/]+)/include/uapi/[^:]*:#[[:space:]]*define[[:space:]]+'"$name"'[[:space:]]+([^[:space:]]+)([[:space:]].*)?$|\1\t\2|p' |
 		sed s/parisc/hppa/ |
 		sort |
 		awk -vname="$name" -vdef="$def" -vfmt="$VAL_PRINT_FMT" '
diff --git a/maint/ioctls_sym.sh b/maint/ioctls_sym.sh
index bc31c254c..e8ea10b57 100755
--- a/maint/ioctls_sym.sh
+++ b/maint/ioctls_sym.sh
@@ -431,10 +431,10 @@ process_file()
 				i?86|x86_64*) list="$arm_list|$ppc_list|$s390_list" ;;
 				*) list="$arm_list|$ppc_list|$s390_list|$x86_list" ;;
 			esac
-			sed -r -i "/[[:space:]]($list)[[:space:]]/d" "$tmpdir"/header.out
+			sed -E -i "/[[:space:]]($list)[[:space:]]/d" "$tmpdir"/header.out
 			;;
 		*linux/v4l2-subdev.h)
-			sed -r -i '/[[:space:]]VIDIOC_SUBDEV_(DV_TIMINGS_CAP|ENUM_DV_TIMINGS|ENUMSTD|G_DV_TIMINGS|G_EDID|G_STD|QUERY_DV_TIMINGS|QUERYSTD|S_DV_TIMINGS|S_EDID|S_STD)[[:space:]]/d' \
+			sed -E -i '/[[:space:]]VIDIOC_SUBDEV_(DV_TIMINGS_CAP|ENUM_DV_TIMINGS|ENUMSTD|G_DV_TIMINGS|G_EDID|G_STD|QUERY_DV_TIMINGS|QUERYSTD|S_DV_TIMINGS|S_EDID|S_STD)[[:space:]]/d' \
 				"$tmpdir"/header.out
 			;;
 	esac
@@ -460,7 +460,7 @@ process_file()
 	$READELF --wide --debug-dump=info "$tmpdir"/printents.o \
 		> "$tmpdir"/debug-dump
 
-	sed -r -n '
+	sed -E -n '
 		/^[[:space:]]*<1>/,/^[[:space:]]*<1><[^>]+>: Abbrev Number: 0/!d
 		/^[[:space:]]*<[^>]*><[^>]*>: Abbrev Number: 0/d
 		s/^[[:space:]]*<[[:xdigit:]]+>[[:space:]]+//
diff --git a/maint/make-dsc b/maint/make-dsc
index 824aaefdf..5935720e7 100755
--- a/maint/make-dsc
+++ b/maint/make-dsc
@@ -13,7 +13,7 @@ $(sed '/^Source:[[:space:]]*/!d;q' debian/control)
 Binary: $(sed '/^Package:[[:space:]]*/!d;s///' debian/control |
 	tr '\n' ' ' | sed 's/ ./,&/g')
 $(sed '/^Architecture:[[:space:]]*/!d;q' debian/control)
-Version: $(sed -r -n '1s/^[^(]*\(([^)]+)\).*/\1/p' debian/changelog)
+Version: $(sed -E -n '1s/^[^(]*\(([^)]+)\).*/\1/p' debian/changelog)
 $(sed '/^Maintainer:[[:space:]]*/!d;q' debian/control)
 $(sed '/^Homepage:[[:space:]]*/!d;q' debian/control)
 $(sed '/^Standards-Version:[[:space:]]*/!d;q' debian/control)
diff --git a/src/Makefile.am b/src/Makefile.am
index 5e5516ed1..cd4af9ae2 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -1091,7 +1091,7 @@ ioctl_redefs_h = $(filter-out ioctl_redefs0.h,$(subst ioctlent,ioctl_redefs,$(io
 ioctl_redefs%.h: ioctlent%.h ioctlent0.h
 	sort $< > $<-t
 	sort ioctlent0.h | comm -23 $<-t - | \
-		sed -r -n 's/^\{ "([^"]+)", (0x[[:xdigit:]]+) \},$$/#ifdef \1\n# undef \1\n# define \1 \2\n#endif/p' \
+		sed -E -n 's/^\{ "([^"]+)", (0x[[:xdigit:]]+) \},$$/#ifdef \1\n# undef \1\n# define \1 \2\n#endif/p' \
 		> $@-t
 	rm -f $<-t
 	mv $@-t $@
@@ -1168,7 +1168,7 @@ mpers-m%.stamp: $(srcdir_mpers_source_files) printers.h sys_func.h
 
 m%_type_defs.h: $(srcdir_mpers_source_files)
 	for f in $^; do \
-		sed -r -n 's/^#[[:space:]]*include DEF_MPERS_TYPE\(([^)]+)\)/#ifdef MPERS_$(mpers_PREFIX)\1\n# define \1 MPERS_$(mpers_PREFIX)\1\n#endif/p' $$f || exit; \
+		sed -E -n 's/^#[[:space:]]*include DEF_MPERS_TYPE\(([^)]+)\)/#ifdef MPERS_$(mpers_PREFIX)\1\n# define \1 MPERS_$(mpers_PREFIX)\1\n#endif/p' $$f || exit; \
 	done > $@-t
 	echo '#undef MPERS_PRINTER_NAME' >> $@-t
 	echo '#define MPERS_PRINTER_NAME(printer_name) printer_name' >> $@-t
@@ -1178,7 +1178,7 @@ m%_type_defs.h: $(srcdir_mpers_source_files)
 
 m%_funcs.h: $(srcdir_mpers_source_files)
 	for f in $^; do \
-		sed -r -n 's/^SYS_FUNC\(([^)]+)\)/#undef sys_\1\n#define sys_\1 $(mpers_PREFIX)sys_\1/p' $$f || exit; \
+		sed -E -n 's/^SYS_FUNC\(([^)]+)\)/#undef sys_\1\n#define sys_\1 $(mpers_PREFIX)sys_\1/p' $$f || exit; \
 	done > $@-t && \
 	echo '#include "sys_func.h"' >> $@-t
 	mv $@-t $@
@@ -1194,7 +1194,7 @@ printers.h: $(mpers_preproc_files)
 	echo '/* Generated by Makefile from $^; do not edit. */' > $@-t
 	echo 'typedef struct {' >> $@-t
 	for f in $^; do \
-		sed -r -n 's/$(mpers_printer_decl_pattern)/ \1 (*\2)(\3);\n#define \2 MPERS_PRINTER_NAME(\2)\n/p' $$f \
+		sed -E -n 's/$(mpers_printer_decl_pattern)/ \1 (*\2)(\3);\n#define \2 MPERS_PRINTER_NAME(\2)\n/p' $$f \
 		|| exit; \
 	done >> $@-t
 	echo '} struct_printers;' >> $@-t
@@ -1205,7 +1205,7 @@ printers.h: $(mpers_preproc_files)
 %_printer_decls.h: $(mpers_preproc_files)
 	echo '/* Generated by Makefile from $^; do not edit. */' > $@-t
 	for f in $^; do \
-		sed -r -n 's/$(mpers_printer_decl_pattern)/extern \1 $(mpers_PREFIX)\2(\3);/p' $$f \
+		sed -E -n 's/$(mpers_printer_decl_pattern)/extern \1 $(mpers_PREFIX)\2(\3);/p' $$f \
 		|| exit; \
 	done >> $@-t
 	mv $@-t $@
@@ -1213,7 +1213,7 @@ printers.h: $(mpers_preproc_files)
 %_printer_defs.h: $(mpers_preproc_files)
 	echo '/* Generated by Makefile from $^; do not edit. */' > $@-t
 	for f in $^; do \
-		sed -r -n 's/$(mpers_printer_decl_pattern)/.\2 = $(mpers_PREFIX)\2,/p' $$f \
+		sed -E -n 's/$(mpers_printer_decl_pattern)/.\2 = $(mpers_PREFIX)\2,/p' $$f \
 		|| exit; \
 	done >> $@-t
 	mv $@-t $@
diff --git a/src/generate_mpers_am.sh b/src/generate_mpers_am.sh
index 56dd9f38e..d7e7a3b57 100755
--- a/src/generate_mpers_am.sh
+++ b/src/generate_mpers_am.sh
@@ -9,7 +9,7 @@
 
 cd "$(dirname "$0")"
 
-list="$(sed -r -n '/^strace_SOURCES[[:space:]]*=/,/^[[:space:]]*# end of strace_SOURCES/ s/^[[:space:]]*([[:alnum:]][^.]*\.c)[[:space:]]*\\$/\1/p' Makefile.am |
+list="$(sed -E -n '/^strace_SOURCES[[:space:]]*=/,/^[[:space:]]*# end of strace_SOURCES/ s/^[[:space:]]*([[:alnum:]][^.]*\.c)[[:space:]]*\\$/\1/p' Makefile.am |
 	xargs -r grep -Elx '#[[:space:]]*include[[:space:]]+MPERS_DEFS' |
 	tr '\n' ' ')"
 
@@ -18,5 +18,5 @@ cat > mpers.am <<EOF
 mpers_source_files = $list
 EOF
 
-sed -r -n 's/^#[[:space:]]*include[[:space:]]*"xlat\/([a-z][a-z_0-9]*)\.h".*/extern const struct xlat \1[];/p' \
+sed -E -n 's/^#[[:space:]]*include[[:space:]]*"xlat\/([a-z][a-z_0-9]*)\.h".*/extern const struct xlat \1[];/p' \
 	$list > mpers_xlat.h
diff --git a/src/generate_sen.sh b/src/generate_sen.sh
index 343949654..25cde69c4 100755
--- a/src/generate_sen.sh
+++ b/src/generate_sen.sh
@@ -9,7 +9,7 @@
 
 echo 'enum {'
 echo 'SEN_printargs = 0,'
-    sed -r -n '/printargs/! s/.*SEN\(([^)]+)\).*/\1/p' |
+    sed -E -n '/printargs/! s/.*SEN\(([^)]+)\).*/\1/p' |
     LC_COLLATE=C sort -u |
     sed 's/.*/SEN_&,/'
 echo '};'
diff --git a/src/kernel_fcntl.h b/src/kernel_fcntl.h
index 497aa4887..9c0e68d96 100644
--- a/src/kernel_fcntl.h
+++ b/src/kernel_fcntl.h
@@ -19,7 +19,7 @@
 # define flock64 kernel_flock64
 
 /*
- * sed -rn 's/^#define[[:space:]]+([^[:space:]]+)[[:space:]].*$/# undef \1/p' \
+ * sed -En 's/^#define[[:space:]]+([^[:space:]]+)[[:space:]].*$/# undef \1/p' \
  *	include/uapi/asm-generic/fcntl.h
  */
 # undef O_ACCMODE
diff --git a/src/linux/mips/genstub.sh b/src/linux/mips/genstub.sh
index 02d1b8d35..4c01c0151 100755
--- a/src/linux/mips/genstub.sh
+++ b/src/linux/mips/genstub.sh
@@ -11,5 +11,5 @@ dstdir="$1"; shift
 for n; do
 	in="$srcdir/syscallent-$n.h"
 	out="$dstdir/syscallent-$n-stub.h"
-	sed -r -n '/^#if/,/^#else/ {s/^([^{]*\{[^,]*,[^,]*,[[:space:]]*)[^,[:space:]]+,[[:space:]]*"([^"]+".*)/\1SEN(printargs), SYSCALL_NAME_PREFIX "\2/; s/^\[.*/&/p}' < "$in" > "$out"
+	sed -E -n '/^#if/,/^#else/ {s/^([^{]*\{[^,]*,[^,]*,[[:space:]]*)[^,[:space:]]+,[[:space:]]*"([^"]+".*)/\1SEN(printargs), SYSCALL_NAME_PREFIX "\2/; s/^\[.*/&/p}' < "$in" > "$out"
 done
diff --git a/src/mpers.sh b/src/mpers.sh
index bb5685465..bb948de8d 100755
--- a/src/mpers.sh
+++ b/src/mpers.sh
@@ -25,7 +25,7 @@ VAR_NAME='mpers_target_var'
 BITS_DIR="mpers-${ARCH_FLAG}"
 
 mkdir -p ${BITS_DIR}
-set -- $(sed -r -n \
+set -- $(sed -E -n \
 	's/^#[[:space:]]*include[[:space:]]+DEF_MPERS_TYPE\(([^)[:space:]]*)\)$/\1/p' \
 		"${PARSER_FILE}")
 for m_type; do
@@ -47,7 +47,7 @@ for m_type; do
 	sed -i -e '/DEF_MPERS_TYPE/d' "${f_c}"
 	$CC $CFLAGS $CC_ARCH_FLAG "${f_c}" -o "${f_o}"
 	$READELF --wide --debug-dump=info "${f_o}" > "${f_d1}"
-	sed -r -n '
+	sed -E -n '
 		/^[[:space:]]*<1>/,/^[[:space:]]*<1><[^>]+>: Abbrev Number: 0/!d
 		/^[[:space:]]*<[^>]*><[^>]*>: Abbrev Number: 0/d
 		s/^[[:space:]]*<[[:xdigit:]]+>[[:space:]]+//
diff --git a/src/xlat/v4l2_meta_fmts.in b/src/xlat/v4l2_meta_fmts.in
index 19c865965..3603fd80e 100644
--- a/src/xlat/v4l2_meta_fmts.in
+++ b/src/xlat/v4l2_meta_fmts.in
@@ -1,5 +1,5 @@
 #unconditional
-#sorted sed -rn 's/.*v4l2_fourcc(_be)?\('"'(.)', '(.)', '(.)', '(.)'"'\).*/\10\5\4\3\2\t\0/p' |LC_COLLATE=C sort -k1,1 -t' ' |cut -f2-
+#sorted sed -En 's/.*v4l2_fourcc(_be)?\('"'(.)', '(.)', '(.)', '(.)'"'\).*/\10\5\4\3\2\t\0/p' |LC_COLLATE=C sort -k1,1 -t' ' |cut -f2-
 V4L2_META_FMT_VIVID
 V4L2_META_FMT_UVC
 V4L2_META_FMT_VSP1_HGO
diff --git a/src/xlat/v4l2_pix_fmts.in b/src/xlat/v4l2_pix_fmts.in
index d793c099a..c14d728fa 100644
--- a/src/xlat/v4l2_pix_fmts.in
+++ b/src/xlat/v4l2_pix_fmts.in
@@ -1,5 +1,5 @@
 #unconditional
-#sorted sed -rn 's/.*v4l2_fourcc(_be)?\('"'(.)', '(.)', '(.)', '(.)'"'\).*/\10\5\4\3\2\t\0/p' |LC_COLLATE=C sort -k1,1 -t' ' |cut -f2-
+#sorted sed -En 's/.*v4l2_fourcc(_be)?\('"'(.)', '(.)', '(.)', '(.)'"'\).*/\10\5\4\3\2\t\0/p' |LC_COLLATE=C sort -k1,1 -t' ' |cut -f2-
 V4L2_PIX_FMT_Y10
 V4L2_PIX_FMT_Y12
 V4L2_PIX_FMT_Y4
diff --git a/src/xlat/v4l2_sdr_fmts.in b/src/xlat/v4l2_sdr_fmts.in
index d62238d79..45e9b7d35 100644
--- a/src/xlat/v4l2_sdr_fmts.in
+++ b/src/xlat/v4l2_sdr_fmts.in
@@ -1,5 +1,5 @@
 #unconditional
-#sorted sed -rn 's/.*v4l2_fourcc(_be)?\('"'(.)', '(.)', '(.)', '(.)'"'\).*/\10\5\4\3\2\t\0/p' |LC_COLLATE=C sort -k1,1 -t' ' |cut -f2-
+#sorted sed -En 's/.*v4l2_fourcc(_be)?\('"'(.)', '(.)', '(.)', '(.)'"'\).*/\10\5\4\3\2\t\0/p' |LC_COLLATE=C sort -k1,1 -t' ' |cut -f2-
 V4L2_SDR_FMT_PCU20BE
 V4L2_SDR_FMT_RU12LE
 V4L2_SDR_FMT_CS14LE
diff --git a/tests/Makefile.am b/tests/Makefile.am
index 577d4c637..e10c34adb 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -800,7 +800,7 @@ EXTRA_DIST = \
 ksysent.h: $(srcdir)/ksysent.sed
 	echo '#include <asm/unistd.h>' | \
 		$(CPP) $(AM_CPPFLAGS) $(CPPFLAGS) -dM - > $@.t1
-	LC_COLLATE=C sed -r -n -f $(srcdir)/ksysent.sed < $@.t1 > $@.t2
+	LC_COLLATE=C sed -E -n -f $(srcdir)/ksysent.sed < $@.t1 > $@.t2
 	mv -f $@.t2 $@
 	rm -f $@.t1
 
diff --git a/tests/gen_secontext.sh b/tests/gen_secontext.sh
index 93f8a20a1..f02c992a1 100755
--- a/tests/gen_secontext.sh
+++ b/tests/gen_secontext.sh
@@ -30,15 +30,15 @@ dir="$(dirname "$input")"
 
 secontext_EXECUTABLES = \\
 EOF
-	sed -r -n 's/^([^#[:space:]]+--secontext(_full)?(_mismatch)?)[[:space:]].*/  \1 \\/p' < "$input"
+	sed -E -n 's/^([^#[:space:]]+--secontext(_full)?(_mismatch)?)[[:space:]].*/  \1 \\/p' < "$input"
 	cat <<EOF
   #
 
 EOF
-	sed -r -n 's/-/_/g; s/^([^#[:space:]]+__secontext(_full)?(_mismatch)?)[[:space:]].*/\1_LDADD = \$(LDADD) \$(libselinux_LDADD)/p' < "$input"
+	sed -E -n 's/-/_/g; s/^([^#[:space:]]+__secontext(_full)?(_mismatch)?)[[:space:]].*/\1_LDADD = \$(LDADD) \$(libselinux_LDADD)/p' < "$input"
 } > "$dir/secontext.am"
 
-sed -r -n 's/^([^#[:space:]]+--secontext)[[:space:]].*/\1/p' < "$input" |
+sed -E -n 's/^([^#[:space:]]+--secontext)[[:space:]].*/\1/p' < "$input" |
 while read -r name; do {
 	cat <<-EOF > "$dir/$name.c"
 		/*
@@ -63,7 +63,7 @@ while read -r name; do {
 	EOF
 } < /dev/null; done
 
-sed -r -n 's/^([^#[:space:]]+--secontext_full)[[:space:]].*/\1/p' < "$input" |
+sed -E -n 's/^([^#[:space:]]+--secontext_full)[[:space:]].*/\1/p' < "$input" |
 while read -r name; do {
 	cat <<-EOF > "$dir/$name.c"
 		#define PRINT_SECONTEXT_FULL
@@ -71,7 +71,7 @@ while read -r name; do {
 	EOF
 } < /dev/null; done
 
-sed -r -n 's/^([^#[:space:]]+--secontext(_full)?_mismatch)[[:space:]].*/\1/p' < "$input" |
+sed -E -n 's/^([^#[:space:]]+--secontext(_full)?_mismatch)[[:space:]].*/\1/p' < "$input" |
 while read -r name; do {
 	cat <<-EOF > "$dir/$name.c"
 		#define PRINT_SECONTEXT_MISMATCH
diff --git a/tests/init.sh b/tests/init.sh
index ecc9a9ba8..b1a9aeb61 100644
--- a/tests/init.sh
+++ b/tests/init.sh
@@ -38,7 +38,7 @@ sed_slash_escape()
 # in the CONFIG_H variable).
 get_config_str()
 {
-	sed -r -n 's/#define[[:space:]]*'"$1"'[[:space:]]*"([^"]*)".*/\1/p' \
+	sed -E -n 's/#define[[:space:]]*'"$1"'[[:space:]]*"([^"]*)".*/\1/p' \
 		"$CONFIG_H"
 }
 
@@ -50,7 +50,7 @@ get_config_str()
 get_config_option()
 {
 	local opt
-	opt=$(sed -r -n 's/#define[[:space:]]*'"$1"'[[:space:]]*([0-9]+)$/\1/p' \
+	opt=$(sed -E -n 's/#define[[:space:]]*'"$1"'[[:space:]]*([0-9]+)$/\1/p' \
 		"$CONFIG_H")
 	if [ -n "$opt" -a "$opt" -ne 0 ]; then
 		printf "%s" "$2"
diff --git a/tests/ksysent.sed b/tests/ksysent.sed
index 92069e756..a24be53f6 100644
--- a/tests/ksysent.sed
+++ b/tests/ksysent.sed
@@ -1,4 +1,4 @@
-#!/bin/sed -rnf
+#!/bin/sed -Enf
 #
 # Copyright (c) 2015-2019 The strace developers.
 # All rights reserved.
diff --git a/tests/pc.test b/tests/pc.test
index b70669eab..553fd9150 100755
--- a/tests/pc.test
+++ b/tests/pc.test
@@ -18,14 +18,14 @@ args="--quiet=attach,personality -if $args"
 $STRACE $args 2> "$LOG" ||
 	dump_log_and_fail_with "$STRACE $args failed"
 
-len="$(sed -r -n 's/^\[[[:xdigit:]]+\] write\(-1, 0x8, ([[:digit:]]{1,2})\)[[:space:]]+= -1 .*/\1/p' "$LOG")" &&
+len="$(sed -E -n 's/^\[[[:xdigit:]]+\] write\(-1, 0x8, ([[:digit:]]{1,2})\)[[:space:]]+= -1 .*/\1/p' "$LOG")" &&
 [ -n "$len" ] &&
-pid="$(sed -r -n 's/^\[[[:xdigit:]]{'"$len"'}\] --- SIGCHLD \{si_signo=SIGCHLD, si_code=CLD_(KILLED|DUMPED), si_pid=([[:digit:]]+), .*/\2/p' "$LOG")" &&
+pid="$(sed -E -n 's/^\[[[:xdigit:]]{'"$len"'}\] --- SIGCHLD \{si_signo=SIGCHLD, si_code=CLD_(KILLED|DUMPED), si_pid=([[:digit:]]+), .*/\2/p' "$LOG")" &&
 [ -n "$pid" ] &&
-ip="$(sed -r -n 's/^\[pid +'"$pid"'\] \[([[:xdigit:]]{'"$len"'})] --- SIGSEGV \{.*\} ---$/\1/p' "$LOG")" &&
+ip="$(sed -E -n 's/^\[pid +'"$pid"'\] \[([[:xdigit:]]{'"$len"'})] --- SIGSEGV \{.*\} ---$/\1/p' "$LOG")" &&
 [ -n "$ip" ] &&
 # strip the last nibble of the address. On hppa the lowest 2 bits encode the address space.
-addr="$(echo "$ip" |sed -r 's/^0+//')" && addr=${addr%?} &&
+addr="$(echo "$ip" |sed -E 's/^0+//')" && addr=${addr%?} &&
 [ -n "$addr" ] ||
 	dump_log_and_fail_with
 
diff --git a/tests/strace-S.test b/tests/strace-S.test
index fcea4185e..d64d6bf5c 100755
--- a/tests/strace-S.test
+++ b/tests/strace-S.test
@@ -19,7 +19,7 @@ test_c()
 	sedexpr="$1"; shift
 
 	run_strace -c -w $sortby ../readv > /dev/null
-	sed -r -n -e "$sedexpr" < "$LOG" > "$OUT"
+	sed -E -n -e "$sedexpr" < "$LOG" > "$OUT"
 
 	[ -s "$OUT" ] ||
 		fail_ "$STRACE $args output mismatch"