From: "Steven Rostedt (Google)" <rostedt@xxxxxxxxxxx> nr_key_types and nr_val_types are both size_t which is an unsized number. A compare against zero is always false: if (teval->nr_key_types < 0) Typecast it to signed for these comparisons. Also change the few places the "size_t i" is used where it does: for (; i >= 0; i--) as that too needs to be signed to work. Signed-off-by: Steven Rostedt (Google) <rostedt@xxxxxxxxxxx> --- src/histograms.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/src/histograms.c b/src/histograms.c index 96f0926f062c..42959c154a11 100644 --- a/src/histograms.c +++ b/src/histograms.c @@ -159,7 +159,7 @@ static size_t type_alloc(const struct traceeval_type *defs, { struct traceeval_type *new_defs = NULL; size_t size; - size_t i; + ssize_t i; *copy = NULL; @@ -196,7 +196,7 @@ fail: else print_err("traceeval_type list missing a name"); - for (; i >=0; i--) + for (; i >= 0; i--) free(new_defs[i].name); free(new_defs); return -1; @@ -303,14 +303,14 @@ struct traceeval *traceeval_init(struct traceeval_type *keys, /* alloc key types */ teval->nr_key_types = type_alloc(keys, &teval->key_types); - if (teval->nr_key_types <= 0) { + if ((ssize_t)teval->nr_key_types <= 0) { err_msg = "Failed to allocate user defined keys"; goto fail_release; } /* alloc val types */ teval->nr_val_types = type_alloc(vals, &teval->val_types); - if (teval->nr_val_types < 0) { + if ((ssize_t)teval->nr_val_types < 0) { err_msg = "Failed to allocate user defined values"; goto fail_release; } @@ -785,7 +785,7 @@ static int update_entry(struct traceeval *teval, struct entry *entry, union traceeval_data *copy = entry->vals; union traceeval_data old[teval->nr_val_types]; size_t size = teval->nr_val_types; - size_t i; + ssize_t i; if (!size) return 0; -- 2.40.1