1#   Copyright (C) 1997-2018 Free Software Foundation, Inc.
2
3# This program is free software; you can redistribute it and/or modify
4# it under the terms of the GNU General Public License as published by
5# the Free Software Foundation; either version 3 of the License, or
6# (at your option) any later version.
7#
8# This program is distributed in the hope that it will be useful,
9# but WITHOUT ANY WARRANTY; without even the implied warranty of
10# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
11# GNU General Public License for more details.
12#
13# You should have received a copy of the GNU General Public License
14# along with GCC; see the file COPYING3.  If not see
15# <http://www.gnu.org/licenses/>.
16
17# Prune messages from gcc that aren't useful.
18
19load_lib multiline.exp
20
21if ![info exists TEST_ALWAYS_FLAGS] {
22    set TEST_ALWAYS_FLAGS ""
23}
24set TEST_ALWAYS_FLAGS "-fno-diagnostics-show-caret -fdiagnostics-color=never $TEST_ALWAYS_FLAGS"
25
26proc prune_gcc_output { text } {
27    global srcdir
28
29    #send_user "Before:$text\n"
30
31    # Handle any freeform regexps.
32    set text [handle-dg-regexps $text]
33
34    regsub -all "(^|\n)(\[^\n\]*: \[iI\]|I)n ((static member |lambda )?function|member|method|(copy )?constructor|destructor|instantiation|substitution|program|subroutine|block-data)\[^\n\]*" $text "" text
35    regsub -all "(^|\n)\[^\n\]*(: )?At (top level|global scope):\[^\n\]*" $text "" text
36    regsub -all "(^|\n)\[^\n\]*:   (recursively )?required \[^\n\]*" $text "" text
37    regsub -all "(^|\n)\[^\n\]*:   . skipping \[0-9\]* instantiation contexts \[^\n\]*" $text "" text
38    regsub -all "(^|\n)\[^\n\]*:   in constexpr expansion \[^\n\]*" $text "" text
39    regsub -all "(^|\n)    inlined from \[^\n\]*" $text "" text
40    regsub -all "(^|\n)collect2: error: ld returned \[^\n\]*" $text "" text
41    regsub -all "(^|\n)collect: re(compiling|linking)\[^\n\]*" $text "" text
42    regsub -all "(^|\n)Please submit.*instructions\[^\n\]*" $text "" text
43    regsub -all "(^|\n)\[0-9\]\[0-9\]* errors\." $text "" text
44    regsub -all "(^|\n)(In file included|\[ \]+from)\[^\n\]*" $text "" text
45
46    # Ignore informational notes.
47    regsub -all "(^|\n)\[^\n\]*: note: \[^\n\]*" $text "" text
48
49    # Ignore harmless -fpic warnings.
50    regsub -all "(^|\n)\[^\n\]*: warning: -f(pic|PIC) ignored for target\[^\n\]*" $text "" text
51    regsub -all "(^|\n)\[^\n\]*: warning: -f(pic|PIC)( and -fpic are| is)? not supported\[^\n\]*" $text "" text
52
53    # Ignore errata warning from IA64 assembler.
54    regsub -all "(^|\n)\[^\n\]*: Additional NOP may be necessary to workaround Itanium processor A/B step errata" $text "" text
55    regsub -all "(^|\n)\[^\n*\]*: Assembler messages:\[^\n\]*" $text "" text
56
57    # Ignore harmless VTA note.
58    regsub -all "(^|\n)\[^\n\]*: note: variable tracking size limit exceeded with -fvar-tracking-assignments, retrying without\[^\n\]*" $text "" text
59
60    # It would be nice to avoid passing anything to gcc that would cause it to
61    # issue these messages (since ignoring them seems like a hack on our part),
62    # but that's too difficult in the general case.  For example, sometimes
63    # you need to use -B to point gcc at crt0.o, but there are some targets
64    # that don't have crt0.o.
65    regsub -all "(^|\n)\[^\n\]*file path prefix \[^\n\]* never used" $text "" text
66    regsub -all "(^|\n)\[^\n\]*linker input file unused since linking not done" $text "" text
67
68    # Ignore harmless warnings from Xcode 3.2.x.
69    regsub -all "(^|\n)\[^\n\]*ld: warning: can't add line info to anonymous symbol\[^\n\]*" $text "" text
70    regsub -all "(^|\n)\[^\n\]*warning: DWARFDebugInfoEntry::AppendDependants\[^\n\]*AT_\[^\n\]*FORM_ref4\[^\n\]*" $text "" text
71    regsub -all "(^|\n)\[^\n\]*warning:\[^\n\]*TAG_variable:  AT_location\[^\n\]*didn't have valid function low pc\[^\n\]*" $text "" text
72
73    # Ignore harmless warnings from Xcode 4.0.
74    regsub -all "(^|\n)\[^\n\]*ld: warning: could not create compact unwind for\[^\n\]*" $text "" text
75
76    # Call into multiline.exp to handle any multiline output directives.
77    set text [handle-multiline-outputs $text]
78
79    #send_user "After:$text\n"
80
81    return $text
82}
83
84# escape metacharacters in literal string, so it can be used in regex
85
86proc escape_regex_chars { line } {
87    return [string map {"^" "\\^"
88			"$" "\\$"
89			"(" "\\("
90			")" "\\)"
91			"[" "\\["
92			"]" "\\]"
93			"{" "\\{"
94			"}" "\\}"
95			"." "\\."
96			"\\" "\\\\"
97			"?" "\\?"
98			"+" "\\+"
99			"*" "\\*"
100			"|" "\\|"} $line]
101}
102
103proc prune_file_path { text } {
104    global srcdir
105
106    set safedir [escape_regex_chars $srcdir]
107    regsub -all "$safedir\/" $text "" text
108
109    # Truncate absolute file path into relative path.
110    set topdir "[file dirname [file dirname [file dirname $safedir]]]"
111    regsub -all "$topdir\/" $text "" text
112
113    return $text
114}
115
116# Provide a definition of this if missing (delete after next dejagnu release).
117
118if { [info procs prune_warnings] == "" } then {
119    proc prune_warnings { text } {
120	return $text
121    }
122}
123