[Bug #19319] Fix crash in rb_str_casemap The following code crashes on my machine: ``` GC.stress = true str = "testing testing testing" puts str.capitalize ``` We need to ensure that the object `buffer_anchor` remains on the stack so it does not get GC'd. --- string.c | 2 ++ 1 file changed, 2 insertions(+)
merge revision(s) d8ef0a98c670449b20436947f5ebbd327ed5ab0d: [Backport #19319]