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verilog: do not warn for attributes on null statements

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This commit is contained in:
Eddie Hung 2020-05-14 10:46:40 -07:00
parent 29d84339bf
commit 1c117ac023
2 changed files with 4 additions and 6 deletions
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2
frontends/verilog/verilog_parser.y
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@ -2230,7 +2230,6 @@ behavioral_stmt:
non_opt_delay behavioral_stmt | non_opt_delay behavioral_stmt |
attr simple_behavioral_stmt ';' | attr simple_behavioral_stmt ';' |
attr ';' { attr ';' {
log_file_warning(current_filename, get_line_num(), "Attribute(s) attached to null statement. Ignoring.\n");
free_attr($1); free_attr($1);
} | } |
attr hierarchical_id { attr hierarchical_id {
@ -2534,7 +2533,6 @@ module_gen_body:
gen_stmt_or_module_body_stmt: gen_stmt_or_module_body_stmt:
gen_stmt | module_body_stmt | gen_stmt | module_body_stmt |
attr ';' { attr ';' {
log_file_warning(current_filename, get_line_num(), "Attribute(s) attached to null statement. Ignoring.\n");
free_attr($1); free_attr($1);
}; };

8
tests/verilog/bug2037.ys
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@ -1,4 +1,3 @@
logger -expect warning "Attribute\(s\) attached to null statement\. Ignoring\." 1
logger -expect-no-warnings logger -expect-no-warnings
read_verilog <<EOT read_verilog <<EOT
module test (); module test ();
@ -7,10 +6,10 @@ module test ();
if (y) (* foo *) ; if (y) (* foo *) ;
endmodule endmodule
EOT EOT
select -assert-none a:* a:src %d
design -reset design -reset
logger -expect warning "Attribute\(s\) attached to null statement\. Ignoring\." 3 # cumulative
logger -expect-no-warnings logger -expect-no-warnings
read_verilog <<EOT read_verilog <<EOT
module test (); module test ();
@ -19,10 +18,10 @@ module test ();
if (y) (* foo *) ; else (* bar *) ; if (y) (* foo *) ; else (* bar *) ;
endmodule endmodule
EOT EOT
select -assert-none a:* a:src %d
design -reset design -reset
logger -expect warning "Attribute\(s\) attached to null statement\. Ignoring\." 4 # cumulative
logger -expect-no-warnings logger -expect-no-warnings
read_verilog <<EOT read_verilog <<EOT
module test (); module test ();
@ -30,10 +29,10 @@ module test ();
generate if (y) (* foo *) ; endgenerate generate if (y) (* foo *) ; endgenerate
endmodule endmodule
EOT EOT
select -assert-none a:*
design -reset design -reset
logger -expect warning "Attribute\(s\) attached to null statement\. Ignoring\." 6 # cumulative
logger -expect-no-warnings logger -expect-no-warnings
read_verilog <<EOT read_verilog <<EOT
module test (); module test ();
@ -41,3 +40,4 @@ module test ();
generate if (y) (* foo *) ; else (* bar *); endgenerate generate if (y) (* foo *) ; else (* bar *); endgenerate
endmodule endmodule
EOT EOT
select -assert-none a:*