From 2f0a2a5b4ac9639466b535fe4d0cb252611901c6 Mon Sep 17 00:00:00 2001
From: Mark Mitchell <mark@codesourcery.com>
Date: Mon, 31 May 1999 11:44:46 +0000
Subject: [PATCH] cccp.c (handle_directive): Handle backslash-newlines in
 quoted strings correctly.

        * cccp.c (handle_directive): Handle backslash-newlines in quoted
        strings correctly.

From-SVN: r27279
---
 gcc/ChangeLog |  5 +++++
 gcc/cccp.c    | 28 +++++++++++++++++++++++++---
 2 files changed, 30 insertions(+), 3 deletions(-)

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index d0240839406..e83b9fe681e 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+Mon May 31 11:48:07 1999  Mark Mitchell  <mark@codesourcery.com>
+
+        * cccp.c (handle_directive): Handle backslash-newlines in quoted
+        strings correctly.
+
 Mon May 31 09:36:11 1999  Cort Dougan  <cort@cs.nmt.edu>
 
 	* rs6000/linux.h (LINK_SPEC): Use emulation elf32ppclinux.
diff --git a/gcc/cccp.c b/gcc/cccp.c
index e89d00c574b..6e2d519f626 100644
--- a/gcc/cccp.c
+++ b/gcc/cccp.c
@@ -3981,11 +3981,33 @@ handle_directive (ip, op)
 	  case '\'':
 	  case '\"':
 	    {
+	      int backslash_newlines_p;
+
 	      register U_CHAR *bp1
 		= skip_quoted_string (xp - 1, bp, ip->lineno,
-				      NULL_PTR, NULL_PTR, NULL_PTR);
-	      while (xp != bp1)
-		*cp++ = *xp++;
+				      NULL_PTR, &backslash_newlines_p, 
+				      NULL_PTR);
+	      if (backslash_newlines_p)
+		while (xp != bp1)
+		  {
+		    /* With something like:
+
+			 #define X "a\
+			 b"
+
+		       we should still remove the backslash-newline
+		       pair as part of phase two.  */
+		    if (xp[0] == '\\' && xp[1] == '\n')
+		      xp += 2;
+		    else
+		      *cp++ = *xp++;
+		  }
+	      else
+		/* This is the same as the loop above, but taking
+		   advantage of the fact that we know there are no
+		   backslash-newline pairs.  */
+		while (xp != bp1)
+		  *cp++ = *xp++;
 	    }
 	    break;