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- From: eggert@twinsun.COM (Paul Eggert)
- Subject: cpp doesn't diagnose '\^X' (GCC 2.3.1)
- Message-ID: <9211060138.AA03142@farside.twinsun.com>
- Sender: gnulists@ai.mit.edu
- Organization: GNUs Not Usenet
- Distribution: gnu
- Date: Fri, 6 Nov 1992 01:38:10 GMT
- Approved: bug-gcc@prep.ai.mit.edu
- Lines: 38
-
- GCC 2.3.1 (sparc, SunOS 4.1.2) does not diagnose the syntax error in the first
- line of the following program:
-
- #if '\^X'
- main() { return 0; }
- #endif
-
- cc1 rejects '\^X', so the simplest fix is to have cpp reject it too:
-
-
- Fri Nov 6 01:29:53 1992 Paul Eggert (eggert@twinsun.com)
-
- * cexp.y (parse_escape): Don't accept '\^X'.
-
- ===================================================================
- RCS file: cexp.y,v
- retrieving revision 2.3
- retrieving revision 2.3.1.1
- diff -c -r2.3 -r2.3.1.1
- *** cexp.y 1992/10/21 06:53:52 2.3
- --- cexp.y 1992/11/06 01:29:53 2.3.1.1
- ***************
- *** 764,776 ****
- case 0:
- (*string_ptr)--;
- return 0;
- - case '^':
- - c = *(*string_ptr)++;
- - if (c == '\\')
- - c = parse_escape (string_ptr);
- - if (c == '?')
- - return 0177;
- - return (c & 0200) | (c & 037);
-
- case '0':
- case '1':
- --- 764,769 ----
-
-