[Bug ipa/101625] [12/13/14/15 Regression] ICE in modref_tree::merge with LTO since r11-3825-g71dbabccbfb295c8

[rguenth at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101625

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Last reconfirmed|2025-01-29 00:00:00         |2025-3-5

--- Comment #8 from Richard Biener <rguenth at gcc dot gnu.org> ---
Testcase that's accepted by GCC 15 and reproduces the issue:

typedef enum { XXH_OK } XXH_errorcode;
struct XXH64_state_s {};
struct XXH32_state_s {};
void XXH_free(void *);

XXH_errorcode XXH32_freeState(struct XXH32_state_s *statePtr) {
  XXH_free(statePtr);
  return XXH_OK;
}
XXH_errorcode XXH64_freeState(struct XXH64_state_s *statePtr) {
  XXH_free(statePtr);
  return XXH_OK;
}