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-rw-r--r--proc.c13
1 files changed, 9 insertions, 4 deletions
diff --git a/proc.c b/proc.c
index a43c798a84..b8b2145c41 100644
--- a/proc.c
+++ b/proc.c
@@ -956,10 +956,15 @@ rb_block_arity(void)
min = rb_block_min_max_arity(block, &max);
proc_value = block->proc;
if (proc_value) {
- rb_proc_t *proc;
- GetProcPtr(proc_value, proc);
- if (proc)
- return (proc->is_lambda ? min == max : max != UNLIMITED_ARGUMENTS) ? min : -min-1;
+ if (SYMBOL_P(proc_value)) {
+ return -1;
+ }
+ else {
+ rb_proc_t *proc;
+ GetProcPtr(proc_value, proc);
+ if (proc)
+ return (proc->is_lambda ? min == max : max != UNLIMITED_ARGUMENTS) ? min : -min-1;
+ }
}
return max != UNLIMITED_ARGUMENTS ? min : -min-1;
}