foreach with limit 0 raises error now

https://bugs.ruby-lang.org/issues/18767
headius · Mar 15, 2024 · 7ee4b54 · 7ee4b54
1 parent dd1ec75
commit 7ee4b54
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/core/src/main/java/org/jruby/RubyIO.java b/core/src/main/java/org/jruby/RubyIO.java
@@ -2573,6 +2573,9 @@ public IRubyObject getline(ThreadContext context, RubyIO self, IRubyObject rs, i
     private static final Getline.Callback<RubyIO, RubyIO> GETLINE_YIELD = new Getline.Callback<RubyIO, RubyIO>() {
         @Override
         public RubyIO getline(ThreadContext context, RubyIO self, IRubyObject rs, int limit, boolean chomp, Block block) {
+            if (limit == 0) {
+                throw context.runtime.newArgumentError("invalid limit: 0 for foreach");
+            }
 
             IRubyObject line;
             while ((line = self.getlineImpl(context, rs, limit, chomp)) != context.nil) {