[thirdparty/binutils-gdb.git] / binutils / testsuite / lib / binutils-common.exp

# Copyright (C) 1993-2018 Free Software Foundation, Inc.
#
# This file is part of the GNU Binutils.
#
# This file is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# This program 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
# MA 02110-1301, USA.

# True if the object format is known to be ELF.
#
proc is_elf_format {} {
    # config.sub for these targets curiously transforms a target doublet
    # ending in -elf to -none.  eg. m68hc12-elf to m68hc12-unknown-none
    # They are always elf.
    if { [istarget m68hc1*-*] || [istarget xgate-*] } {
	return 1;
    }

    if {    ![istarget *-*-eabi*]
	 && ![istarget *-*-elf*]
	 && ![istarget *-*-freebsd*]
	 && ![istarget *-*-gnu*]
	 && ![istarget *-*-irix5*]
	 && ![istarget *-*-irix6*]
	 && ![istarget *-*-linux*]
	 && ![istarget *-*-lynxos*]
	 && ![istarget *-*-nacl*]
	 && ![istarget *-*-netbsd*]
	 && ![istarget *-*-openbsd*]
	 && ![istarget *-*-rtems*]
	 && ![istarget *-*-solaris2*]
	 && ![istarget *-*-symbianelf*]
	 && ![istarget *-*-sysv4*]
	 && ![istarget *-*-unixware*]
	 && ![istarget *-*-wasm32*]
	 && ![istarget arm*-*-uclinuxfdpiceabi]
	 && ![istarget avr-*-*]
	 && ![istarget bfin-*-uclinux]
	 && ![istarget frv-*-uclinux*]
	 && ![istarget hppa*64*-*-hpux*]
	 && ![istarget ia64-*-hpux*]
	 && ![istarget sh*-*-uclinux*]
	 && ![istarget tic6x*-*-uclinux*] } {
	return 0
    }

    if { [istarget *-*-linux*ecoff*]
	 || [istarget *-*-rtemscoff*] } {
	return 0
    }

    if { ![istarget *-*-netbsdelf*]
	 && (   [istarget vax-*-netbsd*]
	     || [istarget ns32k-*-netbsd*]) } {
    	return 0
    }

    if {    [istarget arm-*-openbsd*]
	 || [istarget ns32k-*-openbsd*]
	 || [istarget vax-*-openbsd*] } {
	return 0
    }

    return 1
}

# True if the object format is known to be a.out.
#
proc is_aout_format {} {
    if { [istarget *-*-*aout*]
	 || [istarget *-*-bsd*]
	 || [istarget *-*-msdos*]
	 || [istarget ns32k-*-*]
	 || [istarget pdp11-*-*]
	 || [istarget vax-*-netbsd] } {
	return 1
    }
    return 0
}

# True if the object format is known to be PE COFF.
#
proc is_pecoff_format {} {
    if { ![istarget *-*-mingw*]
	 && ![istarget *-*-cygwin*]
	 && ![istarget *-*-cegcc*]
	 && ![istarget *-*-pe*] } {
	return 0
    }

    return 1
}

# True if the object format is known to be 64-bit ELF.
#
proc is_elf64 { binary_file } {
    global READELF
    global READELFFLAGS

    set readelf_size ""
    catch "exec $READELF $READELFFLAGS -h $binary_file > readelf.out" got

    if ![string match "" $got] then {
	return 0
    }

    if { ![regexp "\n\[ \]*Class:\[ \]*ELF(\[0-9\]+)\n" \
	   [file_contents readelf.out] nil readelf_size] } {
	return 0
    }

    if { $readelf_size == "64" } {
	return 1
    }

    return 0
}

# True if the ELF target supports STB_GNU_UNIQUE with the ELF header's
# OSABI field set to ELFOSABI_GNU.
#
# This generally depends on the target OS only, however there are a
# number of exceptions for bare metal targets as follows.  The MSP430
# and Visium targets set OSABI to ELFOSABI_STANDALONE and cannot
# support STB_GNU_UNIQUE.  Likewise non-EABI ARM targets set OSABI to
# ELFOSABI_ARM, and TI C6X targets to ELFOSABI_C6000_*.  Finally
# rather than `bfd_elf_final_link' AM33/2.0, D30V, DLX, and
# picoJava targets use `_bfd_generic_final_link', which does not
# support STB_GNU_UNIQUE symbol binding causing assertion failures.
#
proc supports_gnu_unique {} {
    if { [istarget *-*-gnu*]
	 || [istarget *-*-linux*]
	 || [istarget *-*-nacl*] } {
	return 1
    }
    if { [istarget "arm*-*-*eabi*"] } {
	return 1
    }
    if { [istarget "wasm32*-*-*"] } {
        return 1
    }
    if { ![istarget "*-*-elf*"] } {
	return 0
    }
    if { [istarget "arm*-*-*"]
	 || [istarget "msp430-*-*"]
	 || [istarget "tic6x-*-*"]
	 || [istarget "visium-*-*"] } {
	return 0
    }
    if { [istarget "am33_2.0-*-*"]
	 || [istarget "d30v-*-*"]
	 || [istarget "dlx-*-*"]
	 || [istarget "pj*-*-*"] } {
	return 0
    }
    return 1
}

# True for targets that do not sort .symtab as per the ELF standard.
# ie. any that have mips_elf32_be_vec, mips_elf32_le_vec,
# mips_elf32_n_be_vec or mips_elf32_n_le_vec as the primary bfd target
# vector in config.bfd.  When syncing with config.bfd, don't forget that
# earlier case-matches trump later ones.
proc is_bad_symtab {} {
    if { ![istarget "mips*-*-*"] } {
	return 0;
    }
    if { [istarget "*-*-chorus*"]
	 || [istarget "*-*-irix5*"]
	 || [istarget "*-*-irix6*"]
	 || [istarget "*-*-none"]
	 || [istarget "*-*-rtems*"]
	 || [istarget "*-*-windiss"] } {
	return 1;
    }
    if { [istarget "*-*-elf*"]
	 && ![istarget "*-sde-*"]
	 && ![istarget "*-mti-*"]
	 && ![istarget "*-img-*"] } {
	return 1;
    }
    if { [istarget "*-*-openbsd*"]
	 && ![istarget "mips64*-*-*"] } {
	return 1;
    }
    return 0;
}

# Compare two files line-by-line.  FILE_1 is the actual output and FILE_2
# is the expected output.  Ignore blank lines in either file.
#
# FILE_2 is a series of regexps, comments and # directives.  The directives
# are:
#
#    #pass
#        Treat the test as a PASS if everything up till this point has
#        matched.  Ignore any remaining lines in either FILE_1 or FILE_2.
#
#    #failif
#        Reverse the sense of the test: expect differences to exist.
#
#    #...
#    REGEXP
#        Skip all lines in FILE_1 until the first that matches REGEXP.
#
# Other # lines are comments.  Regexp lines starting with the `!' character
# specify inverse matching (use `\!' for literal matching against a leading
# `!').  Skip empty lines in both files.
#
# The first optional argument is a list of regexp substitutions of the form:
#
#    EXP1 SUBSPEC1 EXP2 SUBSPEC2 ...
#
# This tells the function to apply each regexp substitution EXPi->SUBSPECi
# in order to every line of FILE_2.
#
# Return nonzero if differences exist.
proc regexp_diff { file_1 file_2 args } {
    set eof -1
    set end_1 0
    set end_2 0
    set differences 0
    set diff_pass 0
    set fail_if_match 0
    set ref_subst ""
    if { [llength $args] > 0 } {
	set ref_subst [lindex $args 0]
    }
    if { [llength $args] > 1 } {
	perror "Too many arguments to regexp_diff"
	return 1
    }

    if [file exists $file_1] then {
	set file_a [open $file_1 r]
    } else {
	perror "$file_1 doesn't exist"
	return 1
    }

    if [file exists $file_2] then {
	set file_b [open $file_2 r]
    } else {
	perror "$file_2 doesn't exist"
	close $file_a
	return 1
    }

    verbose " Regexp-diff'ing: $file_1 $file_2" 2

    while { 1 } {
	set line_a ""
	set line_b ""
	while { [string length $line_a] == 0 } {
	    # Ignore blank line in FILE_1.
	    if { [gets $file_a line_a] == $eof } {
		set end_1 1
		break
	    }
	}
	while { [string length $line_b] == 0 || [string match "#*" $line_b] } {
	    if { [string match "#pass" $line_b] } {
		set end_2 1
		set diff_pass 1
		break
	    } elseif { [string match "#failif" $line_b] } {
		send_log "fail if no difference\n"
		verbose "fail if no difference" 3
		set fail_if_match 1
	    } elseif { [string match "#..." $line_b] } {
		if { [gets $file_b line_b] == $eof } {
		    set end_2 1
		    set diff_pass 1
		    break
		}
		set negated [expr { [string index $line_b 0] == "!" }]
		set line_bx [string range $line_b $negated end]
		set n [expr { $negated ? "! " : "" }]
		# Substitute on the reference.
		foreach {name value} $ref_subst {
		    regsub -- $name $line_bx $value line_bx
		}
		verbose "looking for $n\"^$line_bx$\"" 3
		while { [expr [regexp "^$line_bx$" "$line_a"] == $negated] } {
		    verbose "skipping    \"$line_a\"" 3
		    if { [gets $file_a line_a] == $eof } {
			set end_1 1
			break
		    }
		}
		break
	    }
	    if { [gets $file_b line_b] == $eof } {
		set end_2 1
		break
	    }
	}

	if { $diff_pass } {
	    break
	} elseif { $end_1 && $end_2 } {
	    break
	} elseif { $end_1 } {
	    send_log "extra regexps in $file_2 starting with \"^$line_b$\"\nEOF from $file_1\n"
	    verbose "extra regexps in $file_2 starting with \"^$line_b$\"\nEOF from $file_1" 3
	    set differences 1
	    break
	} elseif { $end_2 } {
	    send_log "extra lines in $file_1 starting with \"^$line_a$\"\nEOF from $file_2\n"
	    verbose "extra lines in $file_1 starting with \"^$line_a$\"\nEOF from $file_2\n" 3
	    set differences 1
	    break
	} else {
	    set negated [expr { [string index $line_b 0] == "!" }]
	    set line_bx [string range $line_b $negated end]
	    set n [expr { $negated ? "! " : "" }]
	    set s [expr { $negated ? "  " : "" }]
	    # Substitute on the reference.
	    foreach {name value} $ref_subst {
		regsub -- $name $line_bx $value line_bx
	    }
	    verbose "regexp $n\"^$line_bx$\"\nline   \"$line_a\"" 3
	    if { [expr [regexp "^$line_bx$" "$line_a"] == $negated] } {
		send_log "regexp_diff match failure\n"
		send_log "regexp $n\"^$line_bx$\"\nline   $s\"$line_a\"\n"
		verbose "regexp_diff match failure\n" 3
		set differences 1
	    }
	}
    }

    if { $differences == 0 && !$diff_pass && [eof $file_a] != [eof $file_b] } {
	send_log "$file_1 and $file_2 are different lengths\n"
	verbose "$file_1 and $file_2 are different lengths" 3
	set differences 1
    }

    if { $fail_if_match } {
	if { $differences == 0 } {
	    set differences 1
	} else {
	    set differences 0
	}
    }

    close $file_a
    close $file_b

    return $differences
}
Commit	Line	Data
219d1afa	1	# Copyright (C) 1993-2018 Free Software Foundation, Inc.
f3097f33 RS	2	#
	3	# This file is part of the GNU Binutils.
	4	#
	5	# This file is free software; you can redistribute it and/or modify
	6	# it under the terms of the GNU General Public License as published by
	7	# the Free Software Foundation; either version 3 of the License, or
	8	# (at your option) any later version.
	9	#
	10	# This program is distributed in the hope that it will be useful,
	11	# but WITHOUT ANY WARRANTY; without even the implied warranty of
	12	# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	13	# GNU General Public License for more details.
	14	#
	15	# You should have received a copy of the GNU General Public License
	16	# along with this program; if not, write to the Free Software
	17	# Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
	18	# MA 02110-1301, USA.
	19
	20	# True if the object format is known to be ELF.
	21	#
	22	proc is_elf_format {} {
b3066ae8 AM	23	# config.sub for these targets curiously transforms a target doublet
	24	# ending in -elf to -none. eg. m68hc12-elf to m68hc12-unknown-none
	25	# They are always elf.
	26	if { [istarget m68hc1-] \|\| [istarget xgate-*] } {
	27	return 1;
	28	}
	29
4a85cc09	30	if { ![istarget --eabi*]
f3097f33	31	&& ![istarget --elf*]
4a85cc09	32	&& ![istarget --freebsd*]
f3097f33	33	&& ![istarget --gnu*]
f3097f33 RS	34	&& ![istarget --irix5*]
f3097f33 RS	35	&& ![istarget --irix6*]
4a85cc09	36	&& ![istarget --linux*]
c43b2c54	37	&& ![istarget --lynxos*]
4a85cc09	38	&& ![istarget --nacl*]
f3097f33 RS	39	&& ![istarget --netbsd*]
f3097f33 RS	40	&& ![istarget --openbsd*]
4a85cc09 SKS	41	&& ![istarget --rtems*]
4a85cc09 SKS	42	&& ![istarget --solaris2*]
c43b2c54	43	&& ![istarget --symbianelf*]
4a85cc09 SKS	44	&& ![istarget --sysv4*]
4a85cc09 SKS	45	&& ![istarget --unixware*]
f96bd6c2	46	&& ![istarget --wasm32*]
f1ac0afe	47	&& ![istarget arm--uclinuxfdpiceabi]
4a85cc09 SKS	48	&& ![istarget avr--]
	49	&& ![istarget bfin-*-uclinux]
	50	&& ![istarget frv--uclinux]
	51	&& ![istarget hppa64--hpux]
	52	&& ![istarget ia64--hpux]
	53	&& ![istarget sh--uclinux*]
	54	&& ![istarget tic6x--uclinux*] } {
f3097f33 RS	55	return 0
	56	}
	57
c65c21e1 AM	58	if { [istarget --linuxecoff]
c65c21e1 AM	59	\|\| [istarget --rtemscoff*] } {
f3097f33 RS	60	return 0
	61	}
	62
	63	if { ![istarget --netbsdelf*]
c65c21e1	64	&& ( [istarget vax--netbsd]
f3097f33 RS	65	\|\| [istarget ns32k--netbsd]) } {
	66	return 0
	67	}
	68
4a85cc09	69	if { [istarget arm--openbsd]
f3097f33	70	\|\| [istarget ns32k--openbsd]
f3097f33 RS	71	\|\| [istarget vax--openbsd] } {
	72	return 0
	73	}
	74
	75	return 1
	76	}
	77
	78	# True if the object format is known to be a.out.
	79	#
	80	proc is_aout_format {} {
c65c21e1	81	if { [istarget --aout]
f3097f33 RS	82	\|\| [istarget --bsd*]
f3097f33 RS	83	\|\| [istarget --msdos*]
f3097f33 RS	84	\|\| [istarget ns32k--]
f3097f33 RS	85	\|\| [istarget pdp11--]
f3097f33 RS	86	\|\| [istarget vax-*-netbsd] } {
	87	return 1
	88	}
	89	return 0
	90	}
	91
	92	# True if the object format is known to be PE COFF.
	93	#
	94	proc is_pecoff_format {} {
	95	if { ![istarget --mingw*]
	96	&& ![istarget --cygwin*]
	97	&& ![istarget --cegcc*]
	98	&& ![istarget --pe*] } {
	99	return 0
	100	}
	101
	102	return 1
	103	}
	104
	105	# True if the object format is known to be 64-bit ELF.
	106	#
	107	proc is_elf64 { binary_file } {
	108	global READELF
	109	global READELFFLAGS
	110
	111	set readelf_size ""
	112	catch "exec $READELF $READELFFLAGS -h $binary_file > readelf.out" got
	113
	114	if ![string match "" $got] then {
	115	return 0
	116	}
	117
	118	if { ![regexp "\n\[ \]Class:\[ \]ELF(\[0-9\]+)\n" \
	119	[file_contents readelf.out] nil readelf_size] } {
	120	return 0
	121	}
	122
	123	if { $readelf_size == "64" } {
	124	return 1
	125	}
	126
	127	return 0
	128	}
eb22018c	129
a43942db MR	130	# True if the ELF target supports STB_GNU_UNIQUE with the ELF header's
	131	# OSABI field set to ELFOSABI_GNU.
	132	#
	133	# This generally depends on the target OS only, however there are a
	134	# number of exceptions for bare metal targets as follows. The MSP430
	135	# and Visium targets set OSABI to ELFOSABI_STANDALONE and cannot
	136	# support STB_GNU_UNIQUE. Likewise non-EABI ARM targets set OSABI to
	137	# ELFOSABI_ARM, and TI C6X targets to ELFOSABI_C6000_*. Finally
a8eb42a8	138	# rather than `bfd_elf_final_link' AM33/2.0, D30V, DLX, and
a43942db MR	139	# picoJava targets use `_bfd_generic_final_link', which does not
	140	# support STB_GNU_UNIQUE symbol binding causing assertion failures.
	141	#
	142	proc supports_gnu_unique {} {
	143	if { [istarget --gnu*]
	144	\|\| [istarget --linux*]
	145	\|\| [istarget --nacl*] } {
	146	return 1
	147	}
	148	if { [istarget "arm--eabi"] } {
	149	return 1
	150	}
f96bd6c2 PC	151	if { [istarget "wasm32--*"] } {
	152	return 1
	153	}
a43942db MR	154	if { ![istarget "--elf*"] } {
	155	return 0
	156	}
	157	if { [istarget "arm--*"]
	158	\|\| [istarget "msp430--"]
	159	\|\| [istarget "tic6x--"]
	160	\|\| [istarget "visium--"] } {
	161	return 0
	162	}
	163	if { [istarget "am33_2.0--"]
	164	\|\| [istarget "d30v--"]
	165	\|\| [istarget "dlx--"]
a43942db MR	166	\|\| [istarget "pj--*"] } {
	167	return 0
	168	}
	169	return 1
	170	}
	171
9cc0123f AM	172	# True for targets that do not sort .symtab as per the ELF standard.
	173	# ie. any that have mips_elf32_be_vec, mips_elf32_le_vec,
	174	# mips_elf32_n_be_vec or mips_elf32_n_le_vec as the primary bfd target
	175	# vector in config.bfd. When syncing with config.bfd, don't forget that
	176	# earlier case-matches trump later ones.
	177	proc is_bad_symtab {} {
	178	if { ![istarget "mips--*"] } {
	179	return 0;
	180	}
	181	if { [istarget "--chorus*"]
	182	\|\| [istarget "--irix5*"]
	183	\|\| [istarget "--irix6*"]
	184	\|\| [istarget "--none"]
	185	\|\| [istarget "--rtems*"]
	186	\|\| [istarget "--windiss"] } {
	187	return 1;
	188	}
	189	if { [istarget "--elf*"]
	190	&& ![istarget "-sde-"]
	191	&& ![istarget "-mti-"]
	192	&& ![istarget "-img-"] } {
	193	return 1;
	194	}
	195	if { [istarget "--openbsd*"]
	196	&& ![istarget "mips64--*"] } {
	197	return 1;
	198	}
	199	return 0;
	200	}
	201
eb22018c RS	202	# Compare two files line-by-line. FILE_1 is the actual output and FILE_2
	203	# is the expected output. Ignore blank lines in either file.
	204	#
	205	# FILE_2 is a series of regexps, comments and # directives. The directives
	206	# are:
	207	#
	208	# #pass
	209	# Treat the test as a PASS if everything up till this point has
	210	# matched. Ignore any remaining lines in either FILE_1 or FILE_2.
	211	#
	212	# #failif
	213	# Reverse the sense of the test: expect differences to exist.
	214	#
	215	# #...
	216	# REGEXP
	217	# Skip all lines in FILE_1 until the first that matches REGEXP.
	218	#
738f4d98 MR	219	# Other # lines are comments. Regexp lines starting with the `!' character
	220	# specify inverse matching (use `\!' for literal matching against a leading
	221	# `!'). Skip empty lines in both files.
eb22018c RS	222	#
	223	# The first optional argument is a list of regexp substitutions of the form:
	224	#
	225	# EXP1 SUBSPEC1 EXP2 SUBSPEC2 ...
	226	#
	227	# This tells the function to apply each regexp substitution EXPi->SUBSPECi
	228	# in order to every line of FILE_2.
	229	#
	230	# Return nonzero if differences exist.
	231	proc regexp_diff { file_1 file_2 args } {
	232	set eof -1
	233	set end_1 0
	234	set end_2 0
	235	set differences 0
	236	set diff_pass 0
	237	set fail_if_match 0
	238	set ref_subst ""
	239	if { [llength $args] > 0 } {
	240	set ref_subst [lindex $args 0]
	241	}
	242	if { [llength $args] > 1 } {
	243	perror "Too many arguments to regexp_diff"
	244	return 1
	245	}
	246
	247	if [file exists $file_1] then {
	248	set file_a [open $file_1 r]
	249	} else {
	250	perror "$file_1 doesn't exist"
	251	return 1
	252	}
	253
	254	if [file exists $file_2] then {
	255	set file_b [open $file_2 r]
	256	} else {
	257	perror "$file_2 doesn't exist"
	258	close $file_a
	259	return 1
	260	}
	261
	262	verbose " Regexp-diff'ing: $file_1 $file_2" 2
	263
	264	while { 1 } {
	265	set line_a ""
	266	set line_b ""
	267	while { [string length $line_a] == 0 } {
	268	# Ignore blank line in FILE_1.
	269	if { [gets $file_a line_a] == $eof } {
	270	set end_1 1
	271	break
	272	}
	273	}
	274	while { [string length $line_b] == 0 \|\| [string match "#*" $line_b] } {
	275	if { [string match "#pass" $line_b] } {
	276	set end_2 1
	277	set diff_pass 1
	278	break
	279	} elseif { [string match "#failif" $line_b] } {
	280	send_log "fail if no difference\n"
	281	verbose "fail if no difference" 3
	282	set fail_if_match 1
	283	} elseif { [string match "#..." $line_b] } {
	284	if { [gets $file_b line_b] == $eof } {
	285	set end_2 1
286	set diff_pass 1
287	break
288	}
47a50e5b	289	set negated [expr { [string index $line_b 0] == "!" }]
738f4d98 MR	290	set line_bx [string range $line_b $negated end]
738f4d98 MR	291	set n [expr { $negated ? "! " : "" }]
eb22018c RS	292	# Substitute on the reference.
eb22018c RS	293	foreach {name value} $ref_subst {
738f4d98	294	regsub -- $name $line_bx $value line_bx
eb22018c	295	}
738f4d98 MR	296	verbose "looking for $n\"^$line_bx$\"" 3
738f4d98 MR	297	while { [expr [regexp "^$line_bx$" "$line_a"] == $negated] } {
eb22018c RS	298	verbose "skipping \"$line_a\"" 3
	299	if { [gets $file_a line_a] == $eof } {
	300	set end_1 1
	301	break
	302	}
	303	}
	304	break
	305	}
	306	if { [gets $file_b line_b] == $eof } {
	307	set end_2 1
	308	break
	309	}
	310	}
	311
	312	if { $diff_pass } {
	313	break
	314	} elseif { $end_1 && $end_2 } {
	315	break
	316	} elseif { $end_1 } {
	317	send_log "extra regexps in $file_2 starting with \"^$line_b$\"\nEOF from $file_1\n"
	318	verbose "extra regexps in $file_2 starting with \"^$line_b$\"\nEOF from $file_1" 3
	319	set differences 1
	320	break
	321	} elseif { $end_2 } {
	322	send_log "extra lines in $file_1 starting with \"^$line_a$\"\nEOF from $file_2\n"
	323	verbose "extra lines in $file_1 starting with \"^$line_a$\"\nEOF from $file_2\n" 3
	324	set differences 1
	325	break
	326	} else {
47a50e5b	327	set negated [expr { [string index $line_b 0] == "!" }]
738f4d98 MR	328	set line_bx [string range $line_b $negated end]
	329	set n [expr { $negated ? "! " : "" }]
	330	set s [expr { $negated ? " " : "" }]
eb22018c RS	331	# Substitute on the reference.
eb22018c RS	332	foreach {name value} $ref_subst {
738f4d98	333	regsub -- $name $line_bx $value line_bx
eb22018c	334	}
738f4d98 MR	335	verbose "regexp $n\"^$line_bx$\"\nline \"$line_a\"" 3
738f4d98 MR	336	if { [expr [regexp "^$line_bx$" "$line_a"] == $negated] } {
eb22018c	337	send_log "regexp_diff match failure\n"
738f4d98	338	send_log "regexp $n\"^$line_bx$\"\nline $s\"$line_a\"\n"
eb22018c RS	339	verbose "regexp_diff match failure\n" 3
	340	set differences 1
	341	}
	342	}
	343	}
	344
	345	if { $differences == 0 && !$diff_pass && [eof $file_a] != [eof $file_b] } {
	346	send_log "$file_1 and $file_2 are different lengths\n"
	347	verbose "$file_1 and $file_2 are different lengths" 3
	348	set differences 1
	349	}
	350
	351	if { $fail_if_match } {
	352	if { $differences == 0 } {
	353	set differences 1
	354	} else {
	355	set differences 0
	356	}
	357	}
	358
	359	close $file_a
	360	close $file_b
	361
	362	return $differences
	363	}