When pcap_compile() detects an error, it longjmp()'s out of the

scanner/parser. FreeBSD recently made 'flex' its default implementation
of 'lex'. One of the incompatibilities of 'flex' vs. 'lex' is that
if you longjmp() out of the scanner, you must call yyrestart()
before doing another scan (as documented in flex(1)). So add an
invocation to yyrestart() in lex_init(). This change should be
backwards compatible with the original 'lex'.

PR:	bin/24116

1 files changed, 1 insertions, 0 deletions

diff --git a/contrib/libpcap/scanner.l b/contrib/libpcap/scanner.l
index 54141499e01d..c90d2a8cbc60 100644
--- a/contrib/libpcap/scanner.l
+++ b/contrib/libpcap/scanner.l
@@ -273,6 +273,7 @@ lex_init(buf)
 	char *buf;
 {
 	in_buffer = buf;
+	yyrestart(NULL);
 }
 
 /*