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modules/expand_macros.pl: add some default #includes and use -ftrack-macro-expansion=0 to omit macro tracking noise added in recentish GCC upgrade

This commit is contained in:
Pragmatic Software 2021-08-08 14:13:02 -07:00
parent defad20bfd
commit b4ad221a61
1 changed files with 8 additions and 6 deletions
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14
modules/expand_macros.pl vendored
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@ -3,9 +3,10 @@
# SPDX-FileCopyrightText: 2021 Pragmatic Software <pragma78@gmail.com>
# SPDX-License-Identifier: MIT
# use warnings;
use warnings;
use strict;
use feature "switch";
no if $] >= 5.018, warnings => 'experimental';
use IPC::Open2;
use Text::Balanced qw(extract_bracketed extract_delimited);
@ -84,9 +85,10 @@ print "code after \\n replacement: [$code]\n" if $debug;
my $single_quote = 0;
my $double_quote = 0;
my $parens = 0;
my $escaped = 0;
my $cpp = 0; # preprocessor
$escaped = 0;
while ($code =~ m/(.)/msg) {
my $ch = $1;
my $pos = pos $code;
@ -160,7 +162,7 @@ print "--- precode: [$precode]\n" if $debug;
my $has_main = 0;
if ($lang eq 'C89' or $lang eq 'C99' or $lang eq 'C11' or $lang eq 'C++') {
my $prelude = '';
my $prelude = "#include <stdio.h>\n#include <stddef.h>\n#include <stdlib.h>\n";
while ($precode =~ s/^\s*(#.*\n{1,2})//g) { $prelude .= $1; }
print "*** prelude: [$prelude]\n precode: [$precode]\n" if $debug;
@ -184,7 +186,7 @@ if ($lang eq 'C89' or $lang eq 'C99' or $lang eq 'C11' or $lang eq 'C++') {
print "looking for functions, has main: $has_main\n" if $debug >= 2;
my $func_regex = qr/^([ *\w]+)\s+([*\w]+)\s*\(([^;{]*)\s*\)\s*({.*|<%.*|\?\?<.*)/ims;
my $func_regex = qr/^([ *\w]+)\s+([*\w]+)\s*\(([^;{]*)\s*\)\s*(\{.*|<%.*|\?\?<.*)/ims;
# look for potential functions to extract
while ($preprecode =~ /$func_regex/ms) {
@ -268,7 +270,7 @@ print "after func extract, code: [$code]\n" if $debug;
$code =~ s/\|n/\n/g;
$code =~ s/^\s+//;
$code =~ s/\s+$//;
$code =~ s/({|})\n\s*;\n/$1\n/gs;
$code =~ s/(\{|})\n\s*;\n/$1\n/gs;
$code =~ s/(?:\n\n)+/\n\n/g;
print "final code: [$code]\n" if $debug;
@ -277,7 +279,7 @@ open my $fh, ">prog.c" or die "Couldn't write prog.c: $!";
print $fh $code;
close $fh;
my ($ret, $result) = execute(2, "bash -c \"ulimit -t 1; gcc -E prog.c\"");
my ($ret, $result) = execute(2, "bash -c \"ulimit -t 1; gcc -E -ftrack-macro-expansion=0 prog.c\"");
$result =~ s/.*# \d+ "prog.c"(\s+\d+)*//ms;
$result =~ s/^#.*$//gm;