glsl: Disallow float literals with the 'f' suffix but no point or exponent

According to the GLSL spec float literals like ‘1f’ shouldn't be allowed
without adding a decimal point or an exponent. Apparently the AMD driver also
disallows this so it seems unlikely that anything would be relying on it.

Reviewed-by: Matt Turner <mattst88@gmail.com>

diff --git a/src/glsl/glsl_lexer.ll b/src/glsl/glsl_lexer.ll
index ad6d32f..419a07b 100644 (file)
--- a/src/glsl/glsl_lexer.ll
+++ b/src/glsl/glsl_lexer.ll
@@ -466,10 +466,6 @@ layout             {
                            yylval->real = _mesa_strtof(yytext, NULL);
                            return FLOATCONSTANT;
                        }
-[0-9]+[fF]             {
-                           yylval->real = _mesa_strtof(yytext, NULL);
-                           return FLOATCONSTANT;
-                       }
 
 true                   {
                            yylval->n = 1;