commit 9e52ea8a29db42f37188fd8fa35d641724c3d015
author Dan Cross <cross@gajendra.net> Thu Apr 20 21:35:23 2017 +0000
committer Russ Cox <rsc@swtch.com> Fri Apr 21 14:09:47 2017 +0000
tree c09a7b1ac2d0b8ab98058f7e7fe5adaa0a29977b
parent 94b38bdb722052838eb0d940c05995b870db4ea0

yacc: Fix a bug from at least 1995.

Fix a bug folding newlines in strings constants in C code snippets
in YACC.  This code has existed since at least 2nd Edition Plan 9.

Change-Id: Iba17b89a6529ac9fa6610bf0b44f551904174c26
Signed-off-by: Dan Cross <cross@gajendra.net>
Reviewed-on: https://plan9port-review.googlesource.com/2840
Reviewed-by: Russ Cox <rsc@swtch.com>

src/cmd/yacc.c

diff --git a/src/cmd/yacc.c b/src/cmd/yacc.c
index c080e01..32990f6 100644
--- a/src/cmd/yacc.c
+++ b/src/cmd/yacc.c
@@ -2130,11 +2130,12 @@
 				c = Bgetrune(finput);
 				if(c == '\n')
 					lineno++;
-			} else
+			} else {
 				if(c == match)
 					goto lcopy;
 				if(c == '\n')
 					error("newline in string or char. const.");
+			}
 			Bputrune(faction, c);
 		}
 		error("EOF in string or character constant");