diff-tree: update stale in-code comments

diff --git a/line-log.c b/line-log.c
index c12c69f05ab478cd35208eed4fdc6697977b86de..626b22cc31726c146347f44d73daa80b776ab74f 100644 (file)
--- a/line-log.c
+++ b/line-log.c
@@ -325,7 +325,7 @@ static int collect_diff_cb(long start_a, long count_a,
        return 0;
 }
 
-static void collect_diff(mmfile_t *parent, mmfile_t *target, struct diff_ranges *out)
+static int collect_diff(mmfile_t *parent, mmfile_t *target, struct diff_ranges *out)
 {
        struct collect_diff_cbdata cbdata = {NULL};
        xpparam_t xpp;
@@ -340,7 +340,7 @@ static void collect_diff(mmfile_t *parent, mmfile_t *target, struct diff_ranges
        xecfg.hunk_func = collect_diff_cb;
        memset(&ecb, 0, sizeof(ecb));
        ecb.priv = &cbdata;
-       xdi_diff(parent, target, &xpp, &xecfg, &ecb);
+       return xdi_diff(parent, target, &xpp, &xecfg, &ecb);
 }
 
 /*
@@ -1030,7 +1030,8 @@ static int process_diff_filepair(struct rev_info *rev,
        }
 
        diff_ranges_init(&diff);
-       collect_diff(&file_parent, &file_target, &diff);
+       if (collect_diff(&file_parent, &file_target, &diff))
+               die("unable to generate diff for %s", pair->one->path);
 
        /* NEEDSWORK should apply some heuristics to prevent mismatches */
        free(rg->path);