Zig-generated function names can clash with LLVM intrinsics

[distractedlambda]

Zig Version

0.10.0-dev.1931+ab658e32b

Steps to Reproduce

Create a file called llvm.zig with a pub function in it:

pub fn foo() {}

and a root source that depends on it (e.g. root.zig):

comptime {
    _ = @import("llvm.zig").foo;
}

Then try to compile root.zig, e.g.

zig build-obj root.zig

Expected Behavior

The compilation succeeds and produces an object file.

Actual Behavior

The compilation fails with this output:

broken LLVM module found: llvm intrinsics cannot be defined!
void ()* @llvm.foo

This is a bug in the Zig compiler.

[ifreund]

Thanks for the bug report! I'm going to close this as a duplicate of #2291 since they have the same root cause and fix.