[Bug lto/118790] New: [15 Regression] during RTL pass: final, ICE in ???

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118790

            Bug ID: 118790
           Summary: [15 Regression] during RTL pass: final, ICE in ???
           Product: gcc
           Version: 15.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: lto
          Assignee: unassigned at gcc dot gnu.org
          Reporter: doko at gcc dot gnu.org
  Target Milestone: ---

seen with trunk 20241218 and 20250203, building the fiat-ecmwf (Fortran)
package. triggered by LTO, builds without LTO:

during RTL pass: final
/usr/src/fiat-ecmwf-1.4.1-1build2/src/fiat/util/ec_meminfo.F90: In function
‘ec_meminfo’:
/usr/src/fiat-ecmwf-1.4.1-1build2/src/fiat/util/ec_meminfo.F90:485:23: internal
compiler error: Segmentation fault
0x2d33d66 diagnostic_context::diagnostic_impl(rich_location*,
diagnostic_metadata const*, diagnostic_option_id, char const*, __va_list_tag
(*) [1], diagnostic_t)
        ???:0
0x2d49d73 internal_error(char const*, ...)
        ???:0
Please submit a full bug report, with preprocessed source (by using
-freport-bug).


complete build log at
https://launchpadlibrarian.net/775110529/buildlog_ubuntu-plucky-amd64.fiat-ecmwf_1.4.1-1build2_BUILDING.txt.gz