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| author | Tristan Gingold <tgingold@free.fr> | 2022-10-01 18:30:59 +0200 |
|---|---|---|
| committer | Tristan Gingold <tgingold@free.fr> | 2022-10-01 18:30:59 +0200 |
| commit | 9c17ff87468773dd87d743c6eb20eb774ce24f8b (patch) | |
| tree | e4d17dbbb951b6926d926a483be4a4e434426f23 /src/synth/synth-vhdl_expr.adb | |
| parent | d7c93e9d72f8ddb29446d525c430098f61e8f9b3 (diff) | |
| download | ghdl-9c17ff87468773dd87d743c6eb20eb774ce24f8b.tar.gz ghdl-9c17ff87468773dd87d743c6eb20eb774ce24f8b.tar.bz2 ghdl-9c17ff87468773dd87d743c6eb20eb774ce24f8b.zip | |
synth: avoid a crash on literal overflow
Diffstat (limited to 'src/synth/synth-vhdl_expr.adb')
| -rw-r--r-- | src/synth/synth-vhdl_expr.adb | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/src/synth/synth-vhdl_expr.adb b/src/synth/synth-vhdl_expr.adb index 392bd1535..a227e7511 100644 --- a/src/synth/synth-vhdl_expr.adb +++ b/src/synth/synth-vhdl_expr.adb @@ -2155,9 +2155,18 @@ package body Synth.Vhdl_Expr is when Iir_Kind_Integer_Literal => declare Res : Valtyp; + V : Int64; begin Res := Create_Value_Memory (Expr_Type, Current_Pool); - Write_Discrete (Res, Get_Value (Expr)); + V := Get_Value (Expr); + if Expr_Type.Sz = 4 + and then (V < Int64 (Int32'First) or V > Int64 (Int32'Last)) + then + -- TODO: should not exist, should be an overflow. + Error_Msg_Synth (Syn_Inst, Expr, "value out of range"); + return No_Valtyp; + end if; + Write_Discrete (Res, V); return Res; end; when Iir_Kind_Floating_Point_Literal => |