scc

commit 4ddd2d61847e132b3ced1e658d47e91529ab646f
parent e01112494a77bdf62e63e5332eb867def79c9326
Author: Michael Forney <mforney@mforney.org>
Date:   Fri, 17 Feb 2017 13:34:23 -0800

[cc2] Add missing * case to assign subop

This fixes *= assignment, which previously triggered a stack underflow.

Also, re-order the cases to match optbl.

Diffstat:
M
cc2/parser.c
 | 
5
+++--
M
tests/execute/0037-assignop.c
 | 
7
+++++--

2 files changed, 8 insertions(+), 4 deletions(-)
diff --git a/cc2/parser.c b/cc2/parser.c
@@ -253,10 +253,11 @@ assign(char *token, union tokenop u)
 	Node *np = newnode(u.op);
 
 	switch (subop = *++token) {
-	case '/':
-	case '%':
 	case '+':
 	case '-':
+	case '*':
+	case '%':
+	case '/':
 	case 'l':
 	case 'r':
 	case '&':
diff --git a/tests/execute/0037-assignop.c b/tests/execute/0037-assignop.c
@@ -9,9 +9,12 @@ main()
 	x += 2;
 	if (x != 4)
 		return 1;
-	x -= 3;
-	if (x != 1)
+	x -= 1;
+	if (x != 3)
 		return 2;
+	x *= 2;
+	if (x != 6)
+		return 3;
 		
 	return 0;
 }