+++ Wookey [2016-03-18 18:42 +0000]:
A bit more detail from the gdb session:
(gdb) bt full
#0 getcurrenv (L=0xffffb7d80378, L=0xffffb7d80378) at lj_api.c:76
fn = 0x7fffb7d80378
#1 cpcall (L=0xffffb7d80378, func=0x404c08 <pmain>, ud=0x0) at lj_api.c:1062
fn = 0x7fffb7d80378
top = <optimized out>
#2 0x00000000004379d8 in lj_vm_cpcall () at buildvm_arm64.dasc:1182
No locals.
#3 0x000000000042bc3c in lua_cpcall (L=L@entry=0xffffb7d80378,
func=func@entry=0x404c08 <pmain>, ud=ud@entry=0x0) at lj_api.c:1079
g = 0xffffb7d803d8
oldh = 0 '\000'
status = -1210580104
#4 0x000000000040406c in main (argc=1, argv=0xfffffffff518) at luajit.c:564
status = <optimized out>
L = 0xffffb7d80378
(gdb) list
71 }
72
73 static GCtab *getcurrenv(lua_State *L)
74 {
75 GCfunc *fn = curr_func(L);
76 return fn->c.gct == ~LJ_TFUNC ? tabref(fn->c.env) : tabref(L->env);
77 }
78
79 /* -- Miscellaneous API functions
----------------------------------------- */
80
(gdb) p fn->c
Cannot access memory at address 0x7fffb7d80378So that top 48th bit missing from the pointers looks wrong. Aarch64 has 48 bits, not the 47 of x86_64. And we see things like this in the code: lj_def.h:#define LJ_MAX_MEM64 ((uint64_t)1<<47) /* Max. 64 bit memory allocation. */ lj_def.h:#define checkptr47(x) (((uint64_t)(x) >> 47) == 0) Wookey -- Principal hats: Linaro, Debian, Wookware, ARM http://wookware.org/
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