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Bug #10853
closedinspect.claer dumps core
Description
$ ruby -e 'inspect.clear'
*** Error in `ruby': munmap_chunk(): invalid pointer: 0x00007fd20ed64fe7 ***
Aborted (core dumped)
str_discard attempts to free a C literal string, which causes core dump.
It must check STR_NOFREE.
diff --git a/string.c b/string.c
index 5de795a..d810213 100644
--- a/string.c
+++ b/string.c
@@ -1662,7 +1662,7 @@ static inline void
str_discard(VALUE str)
{
str_modifiable(str);
- if (!STR_SHARED_P(str) && !STR_EMBED_P(str)) {
+ if (!STR_EMBED_P(str) && !FL_TEST(str, STR_SHARED|STR_NOFREE)) {
ruby_sized_xfree(STR_HEAP_PTR(str), STR_HEAP_SIZE(str));
RSTRING(str)->as.heap.ptr = 0;
RSTRING(str)->as.heap.len = 0;
--
Yusuke Endoh mame@ruby-lang.org
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