typeof_flex_counter(9)

💖 NAME 💖

okay so bestie, we are literally in typeof_flex_counter(9) — yes, that's the Kernel API Manual, section 9, iykyk — and the whole serve is this: it returns the type of the counter variable of a given flexible array member that's been annotated by __counted_by(). That's the function. That's the vibe check. Slay. ✨🦋

🌸 SYNOPSIS 🌸

typeof_flex_counter (FAM );

🎀 ARGUMENTS 🎀

• FAM — literally the instance of a flexible array member within a given struct. One argument, no cap, and she's eating. 🫶💅

🦋 RETURN 🦋

It returns "size_t" if no annotation exists. So when the annotation is not giving, you get "size_t". Periodt. 😭💖

🔥 SEE ALSO 🔥

Kernel file ./include/linux/overflow.h — and omg, the overflow.h cinematic universe is stacked. Main character energy all around, fr fr:

• check_add_overflow(9)
• wrapping_add(9)
• wrapping_assign_add(9)
• check_sub_overflow(9)
• wrapping_sub(9)
• wrapping_assign_sub(9)
• check_mul_overflow(9)
• wrapping_mul(9)
• check_shl_overflow(9)
• overflows_type(9)
• range_overflows(9)
• range_overflows_t(9)
• range_end_overflows(9)
• range_end_overflows_t(9)
• castable_to_type(9)
• size_mul(9)
• size_add(9)
• size_sub(9)
• array_size(9)
• array3_size(9)
• flex_array_size(9)
• struct_size(9)
• struct_size_t(9)
• struct_offset(9)
• __DEFINE_FLEX(9)
• _DEFINE_FLEX(9)
• DEFINE_RAW_FLEX(9)
• DEFINE_FLEX(9)
• STACK_FLEX_ARRAY_SIZE(9)
• overflows_flex_counter_type(9)
• __set_flex_counter(9)

— xoxo, your ./include/linux bestie 💅 Kernel API Manual, October 2026 edition 🎀✨