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From: "dmalcolm at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug analyzer/114286] ICE: in deref_rvalue, at
 analyzer/region-model.cc:2762 with _Atomic _BitInt() and -fanalyzer
Date: Mon, 18 Mar 2024 18:20:32 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D114286

--- Comment #3 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Looking at
https://gcc.gnu.org/onlinedocs/gcc/_005f_005fatomic-Builtins.html#index-_00=
5f_005fatomic_005fload
I see this signature for __atomic_load with 3 arguments:

Built-in Function: void __atomic_load (type *ptr, type *ret, int memorder)

and that's what I tried to implement in r14-1497-gef768035ae8090 in kf.cc's
class kf_atomic_load.

However, looking at the gimple, I see this call:

  __atomic_load (128, &s, &r, 0);

and sync-builtins.def has this:

DEF_SYNC_BUILTIN (BUILT_IN_ATOMIC_LOAD,
                  "__atomic_load",
                  BT_FN_VOID_SIZE_CONST_VPTR_PTR_INT,
                  ATTR_NOTHROWCALL_LEAF_LIST)

so presumably the documentation for __atomic_load is wrong.

Presumably the signature should be:

void __atomic_load (size_t sz, const void *src, void *dst, int memorder);=