From a677fed600872422508f63e84a3e258cac360f91 Mon Sep 17 00:00:00 2001 From: Patrick Steinhardt Date: Tue, 3 Mar 2026 16:00:19 +0100 Subject: [PATCH] git-compat-util: introduce `cast_size_t_to_ssize_t()` Introduce a new helper function `cast_size_t_to_ssize_t()`. This function will be used in the next commit. Signed-off-by: Patrick Steinhardt Signed-off-by: Junio C Hamano --- git-compat-util.h | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/git-compat-util.h b/git-compat-util.h index bebcf9f698..c6af04cd7a 100644 --- a/git-compat-util.h +++ b/git-compat-util.h @@ -665,6 +665,14 @@ static inline int cast_size_t_to_int(size_t a) return (int)a; } +static inline ssize_t cast_size_t_to_ssize_t(size_t a) +{ + if (a > maximum_signed_value_of_type(ssize_t)) + die("number too large to represent as ssize_t on this platform: %"PRIuMAX, + (uintmax_t)a); + return (ssize_t)a; +} + static inline uint64_t u64_mult(uint64_t a, uint64_t b) { if (unsigned_mult_overflows(a, b))