From ed9f41480a32fff7f3ec66ba2d4bf618885e6ad2 Mon Sep 17 00:00:00 2001 From: Taylor Blau Date: Thu, 14 Dec 2023 17:24:22 -0500 Subject: [PATCH] git-compat-util.h: implement checked size_t to uint32_t conversion In a similar fashion as other checked cast functions in this header (such as `cast_size_t_to_ulong()` and `cast_size_t_to_int()`), implement a checked cast function for going from a size_t to a uint32_t value. This function will be utilized in a future commit which needs to make such a conversion. Signed-off-by: Taylor Blau Signed-off-by: Junio C Hamano --- git-compat-util.h | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/git-compat-util.h b/git-compat-util.h index 3e7a59b5ff..c3b6c2c226 100644 --- a/git-compat-util.h +++ b/git-compat-util.h @@ -1013,6 +1013,15 @@ static inline unsigned long cast_size_t_to_ulong(size_t a) return (unsigned long)a; } +static inline uint32_t cast_size_t_to_uint32_t(size_t a) +{ + if (a != (uint32_t)a) + die("object too large to read on this platform: %" + PRIuMAX" is cut off to %u", + (uintmax_t)a, (uint32_t)a); + return (uint32_t)a; +} + static inline int cast_size_t_to_int(size_t a) { if (a > INT_MAX)