fixes #703

DESCRIPTION

@@ -88,7 +88,7 @@ Suggests:
     zoo
 VignetteBuilder: knitr
 Encoding: UTF-8
-RoxygenNote: 7.3.1
+RoxygenNote: 7.3.2
 Collate: 
     'aggregate.R'
     'cubble.R'

NEWS.md

@@ -1,5 +1,7 @@
 # version 0.6-7
 
+* `c.stars()` verifies semantic equivalence of objects' CRS; #703
+
 * initial support for `read_mdim()` to work with `proxy = TRUE`; #659 
 
 # version 0.6-6

R/dimensions.R

@@ -674,8 +674,13 @@ print.dimensions = function(x, ...) {
 identical_dimensions = function(lst, ignore_resolution = FALSE, tolerance = 0) {
 	if (length(lst) > 1) {
 		d1 = attr(lst[[1]], "dimensions")
+		crs1 = st_crs(d1)
+		st_crs(d1) = NA_crs_
 		for (i in 2:length(lst)) {
 			di = attr(lst[[i]], "dimensions")
+			if (st_crs(di) != crs1) # check semantical equivalence; https://github.com/r-spatial/stars/issues/703
+				return(FALSE)
+			st_crs(di) = NA_crs_
 			if (ignore_resolution) {
 				for (j in seq_along(d1))
 					d1[[j]]$delta = d1[[j]]$to = NA_real_