From: Claire Dross <dr...@adacore.com> So it can be used safely from SPARK code. The abstract state represents the source code information that is accessed by the functions defined in Source_Info. It is volatile as it is updated asyncronously when moving in the code.
gcc/ada/ * libgnat/g-souinf.ads (Source_Code_Information): Add a new volatile abstract state and add it in the global contract of all functions defined in Source_Info. Tested on x86_64-pc-linux-gnu, committed on master. --- gcc/ada/libgnat/g-souinf.ads | 20 +++++++++++++++++++- 1 file changed, 19 insertions(+), 1 deletion(-) diff --git a/gcc/ada/libgnat/g-souinf.ads b/gcc/ada/libgnat/g-souinf.ads index 700f5180c82..6b72a6497f1 100644 --- a/gcc/ada/libgnat/g-souinf.ads +++ b/gcc/ada/libgnat/g-souinf.ads @@ -36,7 +36,13 @@ -- and logging purposes. For example, an exception handler can print out -- the name of the source file in which the exception is handled. -package GNAT.Source_Info is +package GNAT.Source_Info with + SPARK_Mode, + Abstract_State => + (Source_Code_Information with + External => (Async_Writers, Async_Readers)), + Annotate => (GNATprove, Always_Return) +is pragma Preelaborate; -- Note that this unit is Preelaborate, but not Pure, that's because the -- functions here such as Line are clearly not pure functions, and normally @@ -47,6 +53,8 @@ package GNAT.Source_Info is -- intrinsics as not Pure, even in Pure units, so no problems arose. function File return String with + Volatile_Function, + Global => Source_Code_Information, Import, Convention => Intrinsic; -- Return the name of the current file, not including the path information. -- The result is considered to be a static string constant. @@ -57,6 +65,8 @@ package GNAT.Source_Info is -- static expression. function Source_Location return String with + Volatile_Function, + Global => Source_Code_Information, Import, Convention => Intrinsic; -- Return a string literal of the form "name:line", where name is the -- current source file name without path information, and line is the @@ -66,6 +76,8 @@ package GNAT.Source_Info is -- string constant. function Enclosing_Entity return String with + Volatile_Function, + Global => Source_Code_Information, Import, Convention => Intrinsic; -- Return the name of the current subprogram, package, task, entry or -- protected subprogram. The string is in exactly the form used for the @@ -80,15 +92,21 @@ package GNAT.Source_Info is -- from within generic templates. function Compilation_ISO_Date return String with + Volatile_Function, + Global => Source_Code_Information, Import, Convention => Intrinsic; -- Returns date of compilation as a static string "yyyy-mm-dd". function Compilation_Date return String with + Volatile_Function, + Global => Source_Code_Information, Import, Convention => Intrinsic; -- Returns date of compilation as a static string "mmm dd yyyy". This is -- in local time form, and is exactly compatible with C macro __DATE__. function Compilation_Time return String with + Volatile_Function, + Global => Source_Code_Information, Import, Convention => Intrinsic; -- Returns GMT time of compilation as a static string "hh:mm:ss". This is -- in local time form, and is exactly compatible with C macro __TIME__. -- 2.34.1