[Bug translator/2014] cannot use backslash for escape sequences

["eteo at redhat dot com" <sourceware-bugzilla at sourceware dot org>]

------- Additional Comments From eteo at redhat dot com  2006-04-20 03:57 -------
I have added the \[0-7]* case to preserve octal escape sequences. I
will be adding a test case to the testsuite soon.

[eteo@eteo systemtap]$ cat octal.stp
probe begin {
        printf("\033[2J");
        printf("\033[31;47mHello Frank\033[0;0m\12");
        printf("\012testing\012test\012\934\012\0075\012\7ab\012\89\012");
}
[eteo@eteo systemtap]$ stap -v octal.stp
Pass 1: parsed user script and 16 library script(s) in 240usr/10sys/258real ms.
Pass 2: analyzed script: 1 probe(s), 0 function(s), 0 global(s) in
0usr/0sys/5real ms.
Pass 3: translated to C into "/home/eteo/tmp/stapBS4VbH/stap_24454.c" in
200usr/90sys/340real ms.
Pass 4: compiled C into "stap_24454.ko" in 3150usr/240sys/3469real ms.
Pass 5: starting run.
(clears screen)
Hello Frank (displays text in red on white)
(two newlines)
testing
test
934
5
ab
89

Here's the patch:

diff -Naurp src.default/ChangeLog src/ChangeLog
--- src.default/ChangeLog       2006-04-19 04:27:33.000000000 +0800
+++ src/ChangeLog       2006-04-20 11:17:02.000000000 +0800
@@ -1,3 +1,9 @@
+2006-04-19  Eugene Teo  <eteo@redhat.com>
+
+       PR 2014
+       * parse.cxx (lexer::scan): Added \[0-7]* case to preserve
+       octal escape sequences.
+
 2006-04-18  Martin Hunt  <hunt@redhat.com>

        * Makefile.am (install-data-local): Another try.
diff -Naurp src.default/parse.cxx src/parse.cxx
--- src.default/parse.cxx       2006-03-04 02:37:33.000000000 +0800
+++ src/parse.cxx       2006-04-20 11:12:20.000000000 +0800
@@ -553,6 +553,7 @@ lexer::scan ()
                case 'v':
                case 'f':
                case 'r':
+               case '0' ... '7':
                case '\\':

                  // Pass these escapes through to the string value


-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|systemtap at sources dot    |eteo at redhat dot com
                   |redhat dot com              |
             Status|NEW                         |ASSIGNED


http://sourceware.org/bugzilla/show_bug.cgi?id=2014

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