sbase

commit c00921a3a3eabb3f908fc22eff9189c756274742
parent 1c79098178db0f6c26bf4459902000b81c098dd0
Author: Roberto E. Vargas Caballero <k0ga@shike2.net>
Date:   Sun, 18 Jan 2026 11:26:26 +0100

bc: Force a unwind string in every function

The code in funcode() assumes that the string unwind has a
value but it didn't happen in the case of a function without
parameters or local variables.

Diffstat:
M
bc.y
 | 
4
++--
A
tests/0046-bc.sh
 | 
19
+++++++++++++++++++

2 files changed, 21 insertions(+), 2 deletions(-)
diff --git a/bc.y b/bc.y
@@ -356,6 +356,7 @@ macro(int op)
 		inhome = 1;
 		break;
 	case DEF:
+		unwind = estrdup("");
 		inhome = 0;
 		d->id = funid(yytext);
 		d->flowid = macros[0].flowid;
@@ -391,8 +392,7 @@ decl(int type, char *list, char *id)
 	i2 = estrdup(id);
 	free(id);
 
-	if (!unwind)
-		unwind = estrdup("");
+	unwind = estrdup("");
 	if (!list)
 		list = estrdup("");
 
diff --git a/tests/0046-bc.sh b/tests/0046-bc.sh
@@ -0,0 +1,19 @@
+#!/bin/sh
+
+tmp=$$.tmp
+
+trap 'rm -f $tmp' EXIT
+trap 'exit $?' HUP INT TERM
+
+cat <<'EOF' > $tmp
+0
+0
+EOF
+
+$EXEC ../bc -p ../dc <<'EOF' | diff -u - $tmp
+define a() {
+0
+}
+
+a()
+EOF