---
id: "bug-1762"
status: "fixed"
status_updated: "2026-09-24"
status_note: ""
component: "scheduler"
severity: "unknown"
timestamp: "2026-09-02T07:50:00Z"
last_seen: "2026-09-19T09:00:00Z"
occurrences: 1
files: ["src/scheduler/testsuite/meson.build (sched_repl_output_compression_test)", "src/scheduler/src/repl.c"]
tags: ["repl", "scheduler-sim", "build-wiring", "meson", "jobid-range-compression", "test-infrastructure"]
related: []
legacy: true
---

# bug-1762: scheduler-sim-repl-verbosity task 1.2 (Jobid Range Compressor, repl_fmt_jobid_range()): task 1.1's…

## Description
scheduler-sim-repl-verbosity task 1.2 (Jobid Range Compressor, repl_fmt_jobid_range()): task 1.1's approved RED-phase meson.build target sched_repl_output_compression_test (src/scheduler/testsuite/meson.build) lists ONLY test_repl_output_compression.c as its source, with no source providing the function's implementation -- so even after adding a correct repl_fmt_jobid_range() definition to src/scheduler/src/repl.c (as design.md's File Structure Plan literally directs: 'implements the new shared jobid-range-compression helper ... in repl.c'), the target still fails to link: undefined reference to repl_fmt_jobid_range.

## Environment
_Not recorded (migrated from buglog.json)._

## Reproduction
_Not recorded (migrated from buglog.json)._

## Root cause
CONFIRMED empirically, but the FIRST fix attempt below drew the wrong conclusion from it. Adding repl.c itself as a bare extra SOURCE FILE to the test target's sources does not fix the link -- it trades one undefined reference for five: repl_dispatch() (a function in repl.c, never called by this test) references repl_cmd_break/repl_cmd_delete/repl_cmd_info/repl_cmd_snapshot/repl_cmd_set, implemented in sibling files repl_break.c/repl_info.c/repl_params.c that this deliberately-lightweight test target does not build. A directly-linked .o file (unlike an archive/static-library member) requires ALL of its undefined symbols resolved regardless of whether the calling code path is ever exercised at runtime -- there is no dead-code elimination at the object-file granularity without -ffunction-sections + -Wl,--gc-sections, which this build does not use. HOWEVER: this only rules out the narrow 'bare .c file in the source list' fix -- it does NOT mean repl_fmt_jobid_range() must live in its own translation unit. sched_scheduler_connect_test (src/scheduler/testsuite/meson.build) already establishes the correct alternative for exactly this shape of problem: link the target against the REAL scheduler_srcs object list (a `foreach f : scheduler_srcs` loop over the production source list, minus src/main.c) instead of hand-picking source files, which resolves repl_dispatch()'s cross-file externs for real (repl_break.c/repl_info.c/repl_params.c are simply also linked in) rather than needing them excluded. This alternative was available and untried at the time of the original fix below, which additionally violated design.md's explicit Architecture Integration commitment ('no new production .c file needed') by introducing repl_jobid_range.c.

## Fix
REMEDIATED (superseding the original fix below, which was reviewed and rejected for violating design.md's 'no new production .c file needed' commitment). repl_fmt_jobid_range() and its private helpers now live in src/scheduler/src/repl.c itself, exactly as design.md's File Structure Plan directs, with only one new #include (<stdarg.h>, for the internal repl_jr_appendf() vararg helper) -- no new production .c file. sched_repl_output_compression_test (src/scheduler/testsuite/meson.build) now links the real scheduler_srcs object list via a `foreach f : scheduler_srcs` loop (mirroring sched_scheduler_connect_test's own established technique) instead of hand-picking source files, so repl_dispatch()'s cross-file externs resolve for real; no `-Wl,--wrap=` or `-DXCE_SCHEDULER_C_PATH` needed since this test never calls sched_init() or reaches networking code. repl_jobid_range.c deleted; 'src/repl_jobid_range.c' removed from scheduler_srcs (src/scheduler/meson.build); repl_internal.h's doc comment on repl_fmt_jobid_range() updated to drop the now-false 'lives in its own translation unit' rationale. Verified: xce-build.sh scheduler --incremental succeeds with zero linker errors; sched_repl_output_compression_test's own binary output shows all 5 Unity tests PASS (5 Tests 0 Failures 0 Ignored); full scheduler suite still 55/56, the one failure being the pre-existing unrelated test_job_rusage_reconciles_mem_reservation_against_usage (test_core_events.c, mem-reservation subsystem, untouched by this change); repl.c stays at 794/800 lines after the addition (up from 531 before this task).

## Verification
_Not recorded (migrated from buglog.json)._

## References
_Not recorded (migrated from buglog.json)._