fix more invalid reads

externals/ggee/filters/hlshelf.c

@@ -177,15 +177,17 @@ void hlshelf_float(t_hlshelf *x,t_floatarg f)
 static void *hlshelf_new(t_symbol* s,t_int argc, t_atom* at)
 {
     t_hlshelf *x = (t_hlshelf *)pd_new(hlshelf_class);
-    t_float k0 = atom_getfloat(at);
-    t_float k1 = atom_getfloat(at+1);
-    t_float k2 = atom_getfloat(at+2);
-    t_float f1 = atom_getfloat(at+3);
-    t_float f2 = atom_getfloat(at+4);
-
-
-    f1 = atom_getfloat(at);
-    f2 = atom_getfloat(at);
+    t_float k0 = argc ? atom_getfloatarg(0, argc--, at++) : 0;
+    t_float k1 = argc ? atom_getfloatarg(0, argc--, at++) : 0;
+    t_float k2 = argc ? atom_getfloatarg(0, argc--, at++) : 0;
+    t_float f1 = argc ? atom_getfloatarg(0, argc--, at++) : 0;
+    t_float f2 = argc ? atom_getfloatarg(0, argc--, at++) : 0;
+
+    /* For some reason f1 and f2 got set to the original value
+       of at[0] below. Not sure why. Anyway, I just set them to
+       k0 which should be functionally equivalent. */
+    f1 = k0;
+    f2 = k0;
 
     if ((f1 == 0.0f && f2 == 0.0f) || f1 > f2){ /* all gains = 0db */
 	 f1 = 150.0f;	

externals/mrpeach/str/str.c

@@ -35,7 +35,7 @@ static void *str_new(t_symbol *s, int argc, t_atom *argv)
 
 void str_setup(void)
 {
-    str_class = class_new(gensym("str"), (t_newmethod)str_new, 0, sizeof(t_str), 0, 0);
+    str_class = class_new(gensym("str"), (t_newmethod)str_new, 0, sizeof(t_str), 0, A_GIMME, 0);
 }
 #else //ifndef PD_BLOBS
 /* Make a _real_ str object: */
@@ -687,7 +687,7 @@ static void *str_new(t_symbol *s, int argc, t_atom *argv)
     x->x_function = 0; /* default = string */
     x->x_nsplit = 0L;
     next = 0; /* index of next argument */
-    if (argv[0].a_type == A_SYMBOL)
+    if (argc && argv[0].a_type == A_SYMBOL)
     { /* the first argument may be a selector */
         atom_string(&argv[0], (char *)x->x_buf.s_data, MAXPDSTRING);
         for (i = 0; i < n_functions; ++i)