Module Functions.Libc

module Libc: sig .. end

val has_replacement : string -> bool

Given the name of C library function return true if there is a drop-in replacement function for it in the RTL.

val replacement_name : string -> string

Given the name of C library function return the name of the RTL function that potentially replaces it.

val is_memcpy : Cil_types.exp -> bool

Return true if exp captures a function name that matches memcpy or an equivalent function

val is_memset : Cil_types.exp -> bool

Return true if exp captures a function name that matches memset or an equivalent function

val is_vla_free : Cil_types.exp -> bool

Return true if exp captures a function name that matches a function that allocates memory for a variable-size array.

val is_vla_free_name : string -> bool

Return true if string captures a function name that matches a function that deallocates memory for a variable-size array.

val is_vla_alloc_name : string -> bool

Same as is_dyn_alloc but for strings

val is_printf_name : string -> bool

Same as is_printf but for strings

val get_printf_argument_str : loc:Cil_types.location -> string -> Cil_types.exp list -> Cil_types.exp

Given the name of a printf-like function and the list of its variadic arguments return a literal string expression where each character describes the type of an argument from a list. Such characters are also called abbreviated types. Conversion between abbreviated and C types characters is as follows:

"b" -> _Bool
"c" -> signed char
"C" -> unsigned char
"d" -> int
"D" -> unsigned int
"h" -> short
"H" -> unsigned short
"l" -> long
"L" -> unsigned long
"r" -> long long
"R" -> unsigned long long
"f" -> float
"e" -> double
"E" -> long double
"s" -> char*
"i" -> int*
"p" -> void*

val actual_alloca : string

The name of an actual alloca function used at link-time. In GCC/Clang alloca is typically implemented via __builtin_alloca