Linkage errors with LLVM 13

Cling
1

Hi folks, I’ve been trying the LLVM 13 branch again and I’m seeing some issues. I’ve made a very small test case here, built on Cling’s own cling-demo: GitHub - jeaye/cling-llvm-13-link-issue

In short, I’m JIT processing some code which defines a new type that inherits from a template using CRTP. It results in:

JIT session error: Symbols not found: [ _ZN14pool_item_baseI3barE13inc_referenceEv, _ZN14pool_item_baseI3barE7releaseEv ]
[runStaticInitializersOnce]: Failed to materialize symbols: { (main, { _ZN21pool_item_common_baseD2Ev, _ZN3barD0Ev, _ZTV3bar, _ZTI3bar, b, _ZTI21pool_item_common_base, _ZN14pool_item_baseI3barED2Ev, _ZN3barD2Ev, _ZTS14pool_item_baseI3barE, _ZTS21pool_item_common_base, _ZTI14pool_item_baseI3barE, $.cling-module-2.__inits.0, __orc_init_func.cling-module-2, _ZN3barD1Ev, _GLOBAL__sub_I_cling_module_2, __cxx_global_var_initcling_module_2_, _ZTS3bar, _Z15__cling_Un1Qu30Pv }) }
IncrementalExecutor::executeFunction: symbol '_ZN14pool_item_baseI3barE7releaseEv' unresolved while linking [cling interface function]!
You are probably missing the definition of pool_item_base<bar>::release()
Maybe you need to load the corresponding shared library?
IncrementalExecutor::executeFunction: symbol '_ZN14pool_item_baseI3barE13inc_referenceEv' unresolved while linking [cling interface function]!
You are probably missing the definition of pool_item_base<bar>::inc_reference()
Maybe you need to load the corresponding shared library?

I’ve also included exactly how I’m building Cling + LLVM 13, in case the issue is with that. I’d appreciate any eyes on this.

2

Hi, thanks, we are in the process of upgrading to LLVM 13, as you can see in this PR. But @vvassilev might be interested by your feedback nevertheless

3

Hi, the cling llvm13 patches on my fork are likely out of date. I expect to converge on the integration maybe next week and I can go and check what’s missing.

1 Like
4

Great, thanks Vassil. I’ll stand by on that.

5

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6

My branches are now fully synchronized. Apologies for the delay.