Origin:
https://sourceforge.net/p/mcj/tickets/187/
https://sourceforge.net/p/mcj/fig2dev/ci/c4465e0d9af89d9738aad31c2d0873ac1fa03c96/

--- a/fig2dev/dev/genpict2e.c
+++ b/fig2dev/dev/genpict2e.c
@@ -3,7 +3,7 @@
  * Copyright (c) 1991 by Micah Beck
  * Parts Copyright (c) 1985-1988 by Supoj Sutanthavibul
  * Parts Copyright (c) 1989-2015 by Brian V. Smith
- * Parts Copyright (c) 2015-2025 by Thomas Loimer
+ * Parts Copyright (c) 2015-2023 by Thomas Loimer
  *
  * Any party obtaining a copy of these files is granted, free of charge, a
  * full and unrestricted irrevocable, world-wide, paid up, royalty-free,
@@ -19,7 +19,7 @@
 /*
  * genpict2e.c: convert fig to pict2e macro language for LaTeX
  *
- * Author: Thomas Loimer, 2014-2025
+ * Author: Thomas Loimer, 2014-2023
  * Based on the latex picture driver, genlatex.c
  *
  */
@@ -2277,13 +2277,8 @@
 	l->join_style = MITERJOIN;
 
 	p = l->points;
-	for (i = 0; i < 8 && p != NULL; ++i)
-		p = p->next;
-	/* If the radius is about 1, the spline may consist of
-	   a few points only. */
-	if (i < 7)
+	if (p == NULL)
 		return;
-	p = l->points;
 
 	/*
 	 * Walk along the spline, until the arc angle is covered.
@@ -2433,7 +2428,7 @@
 	rad = 0.5*(sqrt((double)d1x*d1x + (double)d1y*d1y)
 			+ sqrt((double)d2x*d2x + (double)d2y*d2y));
 	rad = round(rad*10.0) / 10.0;
-	/* how precise must the angle be given?
+	/* how precise must the angle be given? 
 	   1/rad is the view angle of one pixel */
 	da = 180.0 / M_PI / rad;
 	preca = 0;
--- a/fig2dev/object.h
+++ b/fig2dev/object.h
@@ -92,11 +92,14 @@
 	struct f_ellipse	*next;
 } F_ellipse;
 
+#define RADIUS2_MIN	9
 #define INVALID_ELLIPSE(e)						\
 	e->type < T_ELLIPSE_BY_RAD || e->type > T_CIRCLE_BY_DIA ||	\
 	COMMON_PROPERTIES(e) || (e->direction != 1 && e->direction != 0) ||  \
 	e->radiuses.x == 0 || e->radiuses.y == 0 ||			\
+	e->radiuses.x + e->radiuses.y < RADIUS2_MIN ||			\
 	e->angle < -7. || e->angle > 7.
+	/* radiuses are set to positive in read.c */
 
 typedef struct f_arc {
 	int			type;
@@ -135,7 +138,10 @@
 	(a->direction != 0 && a->direction != 1) ||			\
 	COINCIDENT(a->point[0], a->point[1]) ||				\
 	COINCIDENT(a->point[0], a->point[2]) ||				\
-	COINCIDENT(a->point[1], a->point[2])
+	COINCIDENT(a->point[1], a->point[2]) ||				\
+	(a->point[0].x - a->center.x) * (a->point[0].x - a->center.x) +	\
+	(a->point[0].y - a->center.y) * (a->point[0].y - a->center.y) <	\
+	RADIUS2_MIN
 
 typedef struct f_line {
 	int			type;
--- a/fig2dev/read1_3.c
+++ b/fig2dev/read1_3.c
@@ -3,7 +3,7 @@
  * Copyright (c) 1991 by Micah Beck
  * Parts Copyright (c) 1985-1988 by Supoj Sutanthavibul
  * Parts Copyright (c) 1989-2015 by Brian V. Smith
- * Parts Copyright (c) 2015-2022 by Thomas Loimer
+ * Parts Copyright (c) 2015-2025 by Thomas Loimer
  *
  * Any party obtaining a copy of these files is granted, free of charge, a
  * full and unrestricted irrevocable, world-wide, paid up, royalty-free,
@@ -156,8 +156,10 @@
 	a->pen_color = a->fill_color = BLACK_COLOR;
 	a->depth = 0;
 	a->pen = 0;
+	a->fill_style = 0;
 	a->for_arrow = NULL;
 	a->back_arrow = NULL;
+	a->cap_style = 0;
 	a->comments = NULL;
 	a->next = NULL;
 	n = fscanf(fp,
@@ -328,6 +330,10 @@
 		e->type = T_CIRCLE_BY_RAD;
 	else
 		e->type = T_CIRCLE_BY_DIA;
+	if (e->radiuses.x < 0)
+		e->radiuses.x *= -1;
+	if (e->radiuses.y < 0)
+		e->radiuses.y *= -1;
 	if (INVALID_ELLIPSE(e)) {
 		put_msg(Err_invalid, "ellipse");
 		free(e);