core/asm: fix the bug of "00" prefix number (ethereum#22883)

METADIUM · May 18, 2021 · b7a9166 · b7a9166
1 parent bb9f9cc
commit b7a9166
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Showing 2 changed files with 5 additions and 1 deletion.
diff --git a/core/asm/lex_test.go b/core/asm/lex_test.go
@@ -60,6 +60,10 @@ func TestLexer(t *testing.T) {
 			input:  "0123abc",
 			tokens: []token{{typ: lineStart}, {typ: number, text: "0123"}, {typ: element, text: "abc"}, {typ: eof}},
 		},
+		{
+			input:  "00123abc",
+			tokens: []token{{typ: lineStart}, {typ: number, text: "00123"}, {typ: element, text: "abc"}, {typ: eof}},
+		},
 		{
 			input:  "@foo",
 			tokens: []token{{typ: lineStart}, {typ: label, text: "foo"}, {typ: eof}},

diff --git a/core/asm/lexer.go b/core/asm/lexer.go
@@ -254,7 +254,7 @@ func lexInsideString(l *lexer) stateFn {
 
 func lexNumber(l *lexer) stateFn {
 	acceptance := Numbers
-	if l.accept("0") || l.accept("xX") {
+	if l.accept("xX") {
 		acceptance = HexadecimalNumbers
 	}
 	l.acceptRun(acceptance)