From d03405fe390fc5360bf4fe9b78bf145b7cc8a564 Mon Sep 17 00:00:00 2001
From: James Corbett <corbett8@llnl.gov>
Date: Tue, 1 Oct 2024 18:06:09 -0700
Subject: [PATCH] readers: allow id of -1 in JGF

Problem: if a vertex's ID is -1 in JGF, the reader will supply it
with a default value. However, sometimes -1 is desired.

Do not replace an ID of -1 with a default value when reading in JGF.
Instead use -2 as the signpost that no ID was supplied.
---
 resource/readers/resource_reader_jgf.cpp | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/resource/readers/resource_reader_jgf.cpp b/resource/readers/resource_reader_jgf.cpp
index 9ebebe8b6..6f8f6f3c7 100644
--- a/resource/readers/resource_reader_jgf.cpp
+++ b/resource/readers/resource_reader_jgf.cpp
@@ -51,7 +51,7 @@ struct fetch_helper_t : public fetch_remap_support_t {
     int64_t get_proper_rank () const;
     void scrub ();
 
-    int64_t id = -1;
+    int64_t id = -2;
     int64_t rank = -1;
     int64_t size = -1;
     int64_t uniq_id = -1;
@@ -135,7 +135,7 @@ int64_t fetch_helper_t::get_proper_rank () const
 
 void fetch_helper_t::scrub ()
 {
-    id = -1;
+    id = -2;
     rank = -1;
     size = -1;
     uniq_id = -1;
@@ -354,7 +354,7 @@ int resource_reader_jgf_t::apply_defaults (fetch_helper_t &f, const char *name)
             return -1;
         }
     }
-    if (f.id == -1) {
+    if (f.id == -2) {
         f.id = f.uniq_id;
         // for nodes, see if there is an integer suffix on the hostname and use it if so
         if (f.type == std::string{"node"} && name != NULL) {