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-rw-r--r--src/apps/cs2cs.cpp8
1 files changed, 8 insertions, 0 deletions
diff --git a/src/apps/cs2cs.cpp b/src/apps/cs2cs.cpp
index 877a68ff..40b0d584 100644
--- a/src/apps/cs2cs.cpp
+++ b/src/apps/cs2cs.cpp
@@ -45,6 +45,7 @@
#include "proj.h"
#include "proj_internal.h"
#include "emess.h"
+#include "utils.h"
// clang-format on
#define MAX_LINE 1000
@@ -522,6 +523,13 @@ int main(int argc, char **argv) {
if (eargc == 0) /* if no specific files force sysin */
eargv[eargc++] = const_cast<char *>("-");
+ if( oform ) {
+ if( !validate_form_string_for_numbers(oform) ) {
+ emess(3, "invalid format string");
+ exit(0);
+ }
+ }
+
/*
* If the user has requested inverse, then just reverse the
* coordinate systems.