diff --git a/Makefile.in b/Makefile.in
index 6362866..ee4fbc9 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -34,7 +34,7 @@ bindir	= @bindir@
 srcdir  = @srcdir@
 
 
-CC	= @CC@ $(CPPFLAGS)
+CC	= @CC@
 INSTALL	= @INSTALL@
 MKDIR_P = @MKDIR_P@
 SHELL	= /bin/sh
@@ -43,8 +43,8 @@ SHELL	= /bin/sh
 ## Bison is generating incorrect parsers.  So do not use, for now
 # YACC = @YACC@
 
-CFLAGS	= $(ADDCFLAGS) -I. -I$(srcdir) -W -Wall -Wno-implicit-fallthrough -Wno-cast-function-type -Wno-missing-field-initializers -Wno-unused-parameter -Wno-clobbered @CFLAGS@
-CPPFLAGS = $(ADDCPPFLAGS) @CPPFLAGS@
+CPPFLAGS = $(ADDCPPFLAGS) -I. -I$(srcdir) @CPPFLAGS@
+CFLAGS	= $(ADDCFLAGS) -W -Wall -Wno-implicit-fallthrough -Wno-cast-function-type -Wno-missing-field-initializers -Wno-unused-parameter -Wno-clobbered @CFLAGS@
 LDFLAGS	= $(ADDLDFLAGS) @LDFLAGS@
 LIBS	= $(ADDLIBS) @LIBS@
 
@@ -68,10 +68,13 @@ GEN	= esdump y.tab.c y.tab.h y.output token.h sigmsgs.c initial.c
 SIGFILES = @SIGFILES@
 
 es	: ${OFILES} initial.o
-	${CC} -o es ${LDFLAGS} ${OFILES} initial.o ${LIBS}
+	${CC} -o es ${CFLAGS} ${LDFLAGS} ${OFILES} initial.o ${LIBS}
 
 esdump	: ${OFILES} dump.o
-	${CC} -o esdump ${LDFLAGS} ${OFILES} dump.o ${LIBS}
+	${CC} -o esdump ${CFLAGS} ${LDFLAGS} ${OFILES} dump.o ${LIBS}
+
+.c.o:
+	${CC} -c -o $@ ${CFLAGS} ${CPPFLAGS} $<
 
 clean	:
 	rm -f es ${OFILES} ${GEN} dump.o initial.o
diff --git a/es.h b/es.h
index 24ff27b..0b9a53a 100644
--- a/es.h
+++ b/es.h
@@ -113,8 +113,8 @@ extern void undefer(int ticket);
 
 /* term.c */
 
+#define mkstr(str) (mkterm((str), NULL))
 extern Term *mkterm(char *str, Closure *closure);
-extern Term *mkstr(char *str);
 extern char *getstr(Term *term);
 extern Closure *getclosure(Term *term);
 extern Term *termcat(Term *t1, Term *t2);
@@ -173,7 +173,7 @@ extern List *glom2(Tree *tree, Binding *binding, StrList **quotep);
 
 /* glob.c */
 
-extern char QUOTED[], UNQUOTED[];
+extern const char *QUOTED, *UNQUOTED;
 extern List *glob(List *list, StrList *quote);
 extern Boolean haswild(const char *pattern, const char *quoting);
 
diff --git a/glob.c b/glob.c
index c319870..dbf4cf1 100644
--- a/glob.c
+++ b/glob.c
@@ -6,7 +6,7 @@
 #include "es.h"
 #include "gc.h"
 
-char QUOTED[] = "QUOTED", UNQUOTED[] = "RAW";
+const char *QUOTED = "QUOTED", *UNQUOTED = "RAW";
 
 /* hastilde -- true iff the first character is a ~ and it is not quoted */
 static Boolean hastilde(const char *s, const char *q) {
@@ -56,7 +56,7 @@ static List *dirmatch(const char *prefix, const char *dirname, const char *patte
 	 * opendir to handle a trailing slash.
 	 */
 	if (stat(dirname, &s) == -1 || (s.st_mode & S_IFMT) != S_IFDIR)
-		return NULL;	
+		return NULL;
 
 	if (!haswild(pattern, quote)) {
 		char *name = str("%s%s", prefix, pattern);
@@ -69,7 +69,7 @@ static List *dirmatch(const char *prefix, const char *dirname, const char *patte
 
 	dirp = opendir(dirname);
 	if (dirp == NULL)
-		return NULL;	
+		return NULL;
 	for (list = NULL, prevp = &list; (dp = readdir(dirp)) != NULL;)
 		if (match(dp->d_name, pattern, quote)
 		    && (!ishiddenfile(dp->d_name) || *pattern == '.')) {
@@ -95,7 +95,7 @@ static List *listglob(List *list, char *pattern, char *quote, size_t slashcount)
 
 		assert(list->term != NULL);
 		assert(!isclosure(list->term));
-		
+
 		dir = getstr(list->term);
 		dirlen = strlen(dir);
 		if (dirlen + slashcount + 1 >= prefixlen) {
@@ -175,7 +175,7 @@ static List *glob1(const char *pattern, const char *quote) {
 /* glob0 -- glob a list, (destructively) passing through entries we don't care about */
 static List *glob0(List *list, StrList *quote) {
 	List *result, **prevp, *expand1;
-	
+
 	for (result = NULL, prevp = &result; list != NULL; list = list->next, quote = quote->next) {
 		char *str;
 		if (
@@ -225,7 +225,7 @@ static char *expandhome(char *s, StrList *qp) {
 		Ref(char *, home, getstr(list->term));
 		if (c == '\0') {
 			string = home;
-			quote->str = QUOTED;
+			quote->str = (char *)QUOTED;
 		} else {
 			char *q;
 			size_t pathlen = strlen(string);
@@ -243,7 +243,7 @@ static char *expandhome(char *s, StrList *qp) {
 				memset(&q[homelen], 'r', pathlen - slash);
 				q[len] = '\0';
 			} else if (strchr(q, 'r') == NULL)
-				q = QUOTED;
+				q = (char *)QUOTED;
 			else {
 				q = gcalloc(len + 1, &StringTag);
 				memset(q, 'q', homelen);
diff --git a/glom.c b/glom.c
index 28bfb48..5bd4a8f 100644
--- a/glom.c
+++ b/glom.c
@@ -30,9 +30,9 @@ static char *qcat(const char *q1, const char *q2, Term *t1, Term *t2) {
 	assert(gcisblocked());
 
 	if (q1 == QUOTED && q2 == QUOTED)
-		return QUOTED;
+		return (char *)QUOTED;
 	if (q1 == UNQUOTED && q2 == UNQUOTED)
-		return UNQUOTED;
+		return (char *)UNQUOTED;
 
 	len1 = (q1 == QUOTED || q1 == UNQUOTED) ? strlen(getstr(t1)) : strlen(q1);
 	len2 = (q2 == QUOTED || q2 == UNQUOTED) ? strlen(getstr(t2)) : strlen(q2);
@@ -266,7 +266,7 @@ extern List *glom2(Tree *tree, Binding *binding, StrList **quotep) {
 		switch (tp->kind) {
 		case nWord:
 			list = mklist(mkterm(tp->u[0].s, NULL), NULL);
-			qlist = mkstrlist(UNQUOTED, NULL);
+			qlist = mkstrlist((char *)UNQUOTED, NULL);
 			tp = NULL;
 			break;
 		case nList:
@@ -288,7 +288,7 @@ extern List *glom2(Tree *tree, Binding *binding, StrList **quotep) {
 			list = glom1(tp, bp);
 			Ref(List *, lp, list);
 			for (; lp != NULL; lp = lp->next)
-				qlist = mkstrlist(QUOTED, qlist);
+				qlist = mkstrlist((char *)QUOTED, qlist);
 			RefEnd(lp);
 			tp = NULL;
 			break;
diff --git a/match.c b/match.c
index 6b22e6f..c6c4d1b 100644
--- a/match.c
+++ b/match.c
@@ -21,6 +21,7 @@ enum { RANGE_FAIL = -1, RANGE_ERROR = -2 };
 
 #define	ISQUOTED(q, n)	((q) == QUOTED || ((q) != UNQUOTED && (q)[n] == 'q'))
 #define TAILQUOTE(q, n) ((q) == UNQUOTED ? UNQUOTED : ((q) + (n)))
+#define QADVANCE(q, n) ((q) += (((q) == QUOTED || (q) == UNQUOTED) ? 0 : (n)))
 
 /* rangematch -- match a character against a character class */
 static int rangematch(const char *p, const char *q, char c) {
@@ -28,15 +29,15 @@ static int rangematch(const char *p, const char *q, char c) {
 	Boolean neg;
 	Boolean matched = FALSE;
 	if (*p == '~' && !ISQUOTED(q, 0)) {
-		p++, q++;
+		p++, QADVANCE(q, 1);
 	    	neg = TRUE;
 	} else
 		neg = FALSE;
 	if (*p == ']' && !ISQUOTED(q, 0)) {
-		p++, q++;
+		p++, QADVANCE(q, 1);
 		matched = (c == ']');
 	}
-	for (; *p != ']' || ISQUOTED(q, 0); p++, q++) {
+	for (; *p != ']' || ISQUOTED(q, 0); p++, QADVANCE(q, 1)) {
 		if (*p == '\0')
 			return RANGE_ERROR;	/* bad syntax */
 		if (p[1] == '-' && !ISQUOTED(q, 1) && ((p[2] != ']' && p[2] != '\0') || ISQUOTED(q, 2))) {
@@ -44,7 +45,7 @@ static int rangematch(const char *p, const char *q, char c) {
 			if (c >= *p && c <= p[2])
 				matched = TRUE;
 			p += 2;
-			q += 2;
+			QADVANCE(q, 2);
 		} else if (*p == c)
 			matched = TRUE;
 	}
diff --git a/signal.c b/signal.c
index 527dd93..c3cc30c 100644
--- a/signal.c
+++ b/signal.c
@@ -185,6 +185,13 @@ extern void initsignals(Boolean interactive, Boolean allowdumps) {
 		else if (h == SIG_DFL || h == SIG_ERR)
 			sigeffect[sig] = sig_default;
 		else
+#ifdef __has_feature
+# if __has_feature(address_sanitizer) || __has_feature(undefined_behavior_sanitizer)
+			if (sig == SIGKILL || sig == SIGFPE
+			|| sig == SIGBUS || sig == SIGSEGV)
+				sigeffect[sig] = sig_default; else
+# endif
+#endif
 			panic(
 				"initsignals: bad incoming signal value for %s: %x",
 				signame(sig), h
diff --git a/term.c b/term.c
index 4ca99ec..9897fc3 100644
--- a/term.c
+++ b/term.c
@@ -15,16 +15,6 @@ extern Term *mkterm(char *str, Closure *closure) {
 	RefReturn(term);
 }
 
-extern Term *mkstr(char *str) {
-	Term *term;
-	Ref(char *, string, str);
-	term = gcnew(Term);
-        term->str = string;
-	term->closure = NULL;
-        RefEnd(string);
-        return term;
-}
-
 extern Closure *getclosure(Term *term) {
 	if (term->closure == NULL) {
 		char *s = term->str;