[nasm:nasm-2.13.xx] preproc: Don't access offsting byte on unterminated strings

[nasm-bot f. C. G. <gor...@gm...>]

Commit-ID:  3144e84add8b152cc7a71e44617ce6f21daa4ba3
Gitweb:     http://repo.or.cz/w/nasm.git?a=commitdiff;h=3144e84add8b152cc7a71e44617ce6f21daa4ba3
Author:     Cyrill Gorcunov <gor...@gm...>
AuthorDate: Sun, 22 Oct 2017 10:50:55 +0300
Committer:  Cyrill Gorcunov <gor...@gm...>
CommitDate: Sun, 22 Oct 2017 10:50:55 +0300

preproc: Don't access offsting byte on unterminated strings

https://bugzilla.nasm.us/show_bug.cgi?id=3392446

Signed-off-by: Cyrill Gorcunov <gor...@gm...>


---
 asm/preproc.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/asm/preproc.c b/asm/preproc.c
index a8388bc..7b1e2bf 100644
--- a/asm/preproc.c
+++ b/asm/preproc.c
@@ -948,7 +948,9 @@ static Token *tokenize(char *line)
                     case '\'':
                     case '\"':
                     case '`':
-                        p = nasm_skip_string(p - 1) + 1;
+                        p = nasm_skip_string(p - 1);
+                        if (*p)
+                            p++;
                         break;
                     default:
                         break;