From 3b272cc8d275d5e0c833229f4f1155db54301914 Mon Sep 17 00:00:00 2001
From: "R. Timothy Edwards" <tim@opencircuitdesign.com>
Date: Tue, 23 Jun 2026 19:41:53 -0400
Subject: [PATCH] Corrected two "extresist" issues:  (1) Prevent a segfault
 when reading a resistor device which uses the syntax where the resistor is
 given a value directly and not as a parameter;  (2) allow the use of
 "extresist minres 0" (allow resistors in the output no matter how small). 
 Thanks to Torleif Skaar for finding the issue with the resistor syntax.

---
 resis/ResReadExt.c | 6 ++++--
 resis/ResRex.c     | 2 +-
 2 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/resis/ResReadExt.c b/resis/ResReadExt.c
index 9ee11ef2..5e96db81 100644
--- a/resis/ResReadExt.c
+++ b/resis/ResReadExt.c
@@ -800,9 +800,11 @@ ResReadDevice(int argc,
      * be simpler if all devices just put "None" in this position.
      */
     n = argc - i;
-    if ((n % 3) == 1)	/* Device has a substrate argument */
+    if ((n % 3) == 1)
     {
-	if (strcmp(argv[i], "None"))
+	/* Device has a substrate argument or a numerical value */
+
+	if (strcmp(argv[i], "None") && (!StrIsNumeric(argv[i])))
 	{
 	    entry = HashFind(&ResNodeTable, argv[i]);
 	    device->subs = (ResExtNode *)HashGetValue(entry);
diff --git a/resis/ResRex.c b/resis/ResRex.c
index 6d7756c4..bd1a1cc8 100644
--- a/resis/ResRex.c
+++ b/resis/ResRex.c
@@ -350,7 +350,7 @@ typedef enum {
 	    if (cmd->tx_argc > 2)
 	    {
 		resisdata->minres = MagAtof(cmd->tx_argv[2]);
-		if (resisdata->minres <= 0)
+		if (resisdata->minres < 0)
 		{
 		    TxError("Usage:  %s minres [value]\n", cmd->tx_argv[0]);
 			return;