`copy-propagation` pass inflates the source

[Endilll]

As the title says, a bug in copy-propagation seem to have a bug that inflates the source. It prevents creduce from making further progress. Here's the log:

===< pass_clang :: copy-propagation >===
(85.1 %, 90824 bytes)
timestamp 8292 size 90824
(85.1 %, 90826 bytes)
timestamp 8293 size 90826
(85.1 %, 90798 bytes)
timestamp 8293 size 90798
(85.1 %, 90784 bytes)
timestamp 8294 size 90784
(85.1 %, 90784 bytes)
timestamp 8295 size 90784
(85.1 %, 90813 bytes)
timestamp 8304 size 90813
(85.1 %, 90871 bytes)
timestamp 8305 size 90871
(85.0 %, 90987 bytes)
timestamp 8306 size 90987
(85.0 %, 91219 bytes)
timestamp 8306 size 91219
(84.9 %, 91683 bytes)
timestamp 8307 size 91683
(84.8 %, 92611 bytes)
timestamp 8307 size 92611
(84.5 %, 94467 bytes)
timestamp 8308 size 94467
(83.9 %, 98179 bytes)
timestamp 8308 size 98179
(82.6 %, 105603 bytes)
timestamp 8309 size 105603
(80.2 %, 120451 bytes)
timestamp 8309 size 120451
(75.3 %, 150147 bytes)
timestamp 8310 size 150147
(65.6 %, 209539 bytes)
timestamp 8311 size 209539
(46.0 %, 328323 bytes)
timestamp 8311 size 328323
(7.0 %, 565891 bytes)
timestamp 8312 size 565891
(-71.1 %, 1041027 bytes)
timestamp 8313 size 1041027
(-227.3 %, 1991299 bytes)
timestamp 8315 size 1991299
(-539.7 %, 3891843 bytes)
timestamp 8318 size 3891843
(-1164.5 %, 7692931 bytes)
timestamp 8325 size 7692931
(-2414.0 %, 15295107 bytes)
timestamp 8344 size 15295107
(Interestingness test killed by timeout at 20 seconds.)
===< pass_clang :: callexpr-to-value >===

This piece of the original source:

inline constexpr auto with_sym = []<typename tag>(type_t<tag>,auto &&f,id id){
  static_assert(concepts::symtag<tag>);
  return with_enum<tag>(
    [=,f = static_cast<decltype(f) &&>(f)](auto t)mutable{
      return f(sym<t()>{idx_of(id)});
    },
    tag_of(type_c<tag>,id));
};

got inflated like this:

inline constexpr auto with_sym = []< typename tag >(type_t< tag >, auto &&f,
                                                    id id) {
  return with_enum(
      [=, f = static_cast< decltype(f) && >(f)](auto t) mutable {
        return static_cast<decltype(static_cast<decltype(static_cast<decltype(static_cast<decltype(static_cast<decltype(static_cast<decltype(static_cast<decltype(static_cast<decltype(static_cast<decltype(static_cast<decltype(static_cast<decltype(static_cast<decltype(static_cast<decltype(static_cast<decltype(static_cast<decltype(static_cast<decltype(static_cast<decltype(static_cast<decltype(static_cast<decltype(f) &&>(f)) &&>(static_cast<decltype(f) &&>(f))) &&>(static_cast<decltype <...>
(static_cast<decltype(f) &&>(f)) &&>(static_cast<decltype(f) &&>(f))) &&>(static_cast<decltype(static_cast<decltype(f) &&>(f)) &&>(static_cast<decltype(f) &&>(f)))))))))))))))))))(sym<t()>{
 }
      );
      },
      tag_of(type_c< tag >, id));
};

I attached the full source after inflation in case it's helpful.
C-Reduce invocation:
creduce --no-cache --n 8 --timeout 20 --timing --remove-pass pass_clang rename-fun --remove-pass pass_clang rename-param --remove-pass pass_clang rename-var --remove-pass pass_clang rename-class --remove-pass pass_clang rename-cxx-method --remove-pass pass_clex rename-toks --sllooww test.sh pp.ii
C-Reduce --version string is creduce 2.11.0 (unknown). It comes from a Debian unstable repo. Package version is 2.11.0~20240909-2.
gh124471.zip

[eeide]

Thank you for your bug report!