From: Guy Harris <guy@alum.mit.edu>
Date: Fri, 26 Oct 2018 20:02:59 +0000 (-0700)
Subject: Make qerr const.
X-Git-Tag: libpcap-1.10-bp~749
X-Git-Url: https://git.tcpdump.org/libpcap/commitdiff_plain/cd512217e570f796ef3e3a7ad67c66d78c83c2dc

Make qerr const.

It's not something we're allowed to modify, as that could fail if two or
more threads are all running in pcap_compile(); declare it as const to
make sure we don't modify it.
---

diff --git a/grammar.y b/grammar.y
index e060cdea..3eeb135c 100644
--- a/grammar.y
+++ b/grammar.y
@@ -237,7 +237,7 @@ str2tok(const char *str, const struct tok *toks)
 	return (-1);
 }
 
-static struct qual qerr = { Q_UNDEF, Q_UNDEF, Q_UNDEF, Q_UNDEF };
+static const struct qual qerr = { Q_UNDEF, Q_UNDEF, Q_UNDEF, Q_UNDEF };
 
 static PCAP_NORETURN_DEF void
 yyerror(void *yyscanner _U_, compiler_state_t *cstate, const char *msg)