pi@OrangePi:~/iotmonitor$ gdb --args zig build-exe -target arm-linux-gnueabihf hello.zig  -lc
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Reading symbols from zig...r
(no debugging symbols found)...done.
(gdb) r
Starting program: /home/pi/zig-linux-armv7a-0.6.0/zig build-exe -target arm-linux-gnueabihf hello.zig -lc
Code Generation [18/496] std.debug.dumpStackTrace...
Program received signal SIGILL, Illegal instruction.
0x015fded0 in iter_function_params_c_abi(CodeGen*, ZigType*, FnWalk*, unsigned int) ()
(gdb) bt
#0  0x015fded0 in iter_function_params_c_abi(CodeGen*, ZigType*, FnWalk*, unsigned int) ()
#1  0x015fd0b8 in walk_function_params(CodeGen*, ZigType*, FnWalk*) ()
#2  0x016176c8 in make_fn_llvm_value(CodeGen*, ZigFn*) ()
#3  0x016308dc in ir_render_call(CodeGen*, IrExecutableGen*, IrInstGenCall*) ()
#4  0x0161271c in do_code_gen(CodeGen*) ()
#5  0x0160b850 in codegen_build_and_link(CodeGen*) ()
#6  0x015f9188 in main0(int, char**) ()
#7  0x015efb98 in main ()

Dump of assembler code for function _ZL26iter_function_params_c_abiP7CodeGenP7ZigTypeP6FnWalkj:
   0x015fda94 <+0>:     push    {r4, r5, r6, r7, r8, r9, r10, r11, lr}
   0x015fda98 <+4>:     add     r11, sp, #28
   0x015fda9c <+8>:     sub     sp, sp, #44     ; 0x2c
   0x015fdaa0 <+12>:    mov     r10, r0
   0x015fdaa4 <+16>:    ldr     r0, [pc, #4008] ; 0x15fea54 <_ZL26iter_function_params_c_abiP7CodeGenP7ZigTypeP6FnWalkj+4032>
   0x015fdaa8 <+20>:    tst     r2, #3
   0x015fdaac <+24>:    ldr     r0, [pc, r0]
   0x015fdab0 <+28>:    ldr     r0, [r0]
   0x015fdab4 <+32>:    str     r0, [r11, #-32] ; 0xffffffe0
   0x015fdab8 <+36>:    bne     0x15fded0 <_ZL26iter_function_params_c_abiP7CodeGenP7ZigTypeP6FnWalkj+1084>
   0x015fdabc <+40>:    mov     r5, r2
   0x015fdac0 <+44>:    cmp     r2, #0
   0x015fdac4 <+48>:    beq     0x15fded0 <_ZL26iter_function_params_c_abiP7CodeGenP7ZigTypeP6FnWalkj+1084>
   0x015fdac8 <+52>:    ldr     r0, [r5]
   0x015fdacc <+56>:    cmp     r0, #7
   0x015fdad0 <+60>:    bhi     0x15fded0 <_ZL26iter_function_params_c_abiP7CodeGenP7ZigTypeP6FnWalkj+1084>
   0x015fdad4 <+64>:    cmp     r0, #4
   0x015fdad8 <+68>:    bhi     0x15fded4 <_ZL26iter_function_params_c_abiP7CodeGenP7ZigTypeP6FnWalkj+1088>
   0x015fdadc <+72>:    add     r2, pc, #4
   0x015fdae0 <+76>:    ldr     r0, [r2, r0, lsl #2]
   0x015fdae4 <+80>:    add     pc, r2, r0
   0x015fdae8 <+84>:    andeq   r0, r0, r4, lsl r0
   0x015fdaec <+88>:    andeq   r0, r0, r8, asr #7
   0x015fdaf0 <+92>:    andeq   r0, r0, r12, lsr r2
   0x015fdaf4 <+96>:    andeq   r0, r0, r4, ror #5
   0x015fdaf8 <+100>:   strdeq  r0, [r0], -r4
   0x015fdafc <+104>:   tst     r1, #7
   0x015fdb00 <+108>:   bne     0x15fded0 <_ZL26iter_function_params_c_abiP7CodeGenP7ZigTypeP6FnWalkj+1084>
   0x015fdb04 <+112>:   cmp     r1, #0
   0x015fdb08 <+116>:   beq     0x15fded0 <_ZL26iter_function_params_c_abiP7CodeGenP7ZigTypeP6FnWalkj+1084>
   0x015fdb0c <+120>:   add     r0, r1, #24
   0x015fdb10 <+124>:   tst     r0, #7
   0x015fdb14 <+128>:   addeq   r1, r1, #32
   0x015fdb18 <+132>:   tsteq   r1, #7
   0x015fdb1c <+136>:   bne     0x15fded0 <_ZL26iter_function_params_c_abiP7CodeGenP7ZigTypeP6FnWalkj+1084>
   0x015fdb20 <+140>:   ldr     r1, [r1]
   0x015fdb24 <+144>:   mov     r2, #0
   0x015fdb28 <+148>:   cmp     r1, r3