`clLinkProgram` fails when linking SPIR-V that contains `OpExtInst printf` with a UniformConstant pointer as a `%s` format argument.

[pvelesko]

Error:
: error: Invalid record (Producer: 'LLVM16.0.6' Reader: 'LLVM 16.0.6')
clLinkProgram returns CL_LINK_PROGRAM_FAILURE (-17).

Environment:
Device: Intel Arc A770
Driver: 25.44.36015.5
OS: Ubuntu 22.04

SPIR-V pattern that fails:
%fmt = OpVariable %ptr_UniformConstant ... ; "%s"
%str = OpVariable %ptr_UniformConstant ... ; "Hello"
%r = OpExtInst %uint %1 printf %fmt %str ; FAILS

Notes:
SPIR-V passes spirv-val validation
Same kernel compiles fine from OpenCL C source
printf with integer arguments works fine

Reproducer: https://github.com/pvelesko/reproducers/tree/main/opencl-printf

[pvelesko]

I think failing in this case is within spec but the error message should reflect that.