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py: Fix bug where GC collected native/viper/asm function data.

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Because (for Thumb) a function pointer has the LSB set, pointers to
dynamic functions in RAM (eg native, viper or asm functions) were not
being traced by the GC.  This patch is a comprehensive fix for this.

Addresses issue #820.
This commit is contained in:
Damien George
2014-08-24 16:28:17 +01:00
parent 25fc41dd31
commit 3c658a4e75
22 changed files with 208 additions and 121 deletions
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2
py/obj.c
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@@ -161,7 +161,7 @@ mp_int_t mp_obj_hash(mp_obj_t o_in) {
return mp_obj_str_get_hash(o_in);
} else if (MP_OBJ_IS_TYPE(o_in, &mp_type_NoneType)) {
return (mp_int_t)o_in;
} else if (MP_OBJ_IS_TYPE(o_in, &mp_type_fun_native) || MP_OBJ_IS_TYPE(o_in, &mp_type_fun_bc)) {
} else if (MP_OBJ_IS_FUN(o_in)) {
return (mp_int_t)o_in;
} else if (MP_OBJ_IS_TYPE(o_in, &mp_type_tuple)) {
return mp_obj_tuple_hash(o_in);