Allow floats of type 1.0e1

Docs/manual.texi

@@ -46461,6 +46461,8 @@ not yet 100% confident in this code.
 @appendixsubsec Changes in release 3.23.40
 @itemize @bullet
 @item
+Fixed parser to allow floats of type @code{1.0e1} (no sign after @code{e}).
+@item
 Option @code{--force} to @code{myisamchk} now also updates states.
 @item
 Added option @code{--warnings} to @code{mysqld}. Now @code{mysqld}

mysql-test/t/type_float.test

@@ -3,7 +3,8 @@
 # Numeric floating point.
 
 SELECT 10,10.0,10.,.1e+2,100.0e-1;
-select 6e-05, -6e-05, --6e-05, -6e-05+1.000000;
+SELECT 6e-05, -6e-05, --6e-05, -6e-05+1.000000;
+SELECT 1e1,1.e1,1.0e1,1e+1,1.e+1,1.0e+1,1e-1,1.e-1,1.0e-1;
 
 drop table if exists t1;
 create table t1 (f1 float(24),f2 float(52));

sql/sql_lex.cc

@@ -650,12 +650,9 @@ int yylex(void *arg)
       if (c == 'e' || c == 'E')
       {
 	c = yyGet();
-	if (c != '-' && c != '+' && !isdigit(c))
-	{				// No exp sig found
-	  state= STATE_CHAR;
-	  break;
-	}
-	if (!isdigit(yyGet()))
+	if (c == '-' || c == '+')
+	  c = yyGet();			// Skipp sign
+	if (!isdigit(c))
 	{				// No digit after sign
 	  state= STATE_CHAR;
 	  break;