Switch to intmax_t (rather than int) for #if expressions
This is what the C99 specification demands. And the GLSL specification
says that we should follow the "standard C++" rules for #if condition
expressions rather than the GLSL rules, (which only support a 32-bit
integer).
diff --git a/glcpp-parse.y b/glcpp-parse.y
index 0d3afa7..2c0fe9a 100644
--- a/glcpp-parse.y
+++ b/glcpp-parse.y
@@ -107,6 +107,7 @@
%}
%union {
+ intmax_t imaxval;
int ival;
char *str;
argument_list_t *argument_list;
@@ -119,7 +120,8 @@
%lex-param {glcpp_parser_t *parser}
%token DEFINE DEFINED ELIF ELSE ENDIF FUNC_MACRO IDENTIFIER IDENTIFIER_FINALIZED IF IFDEF IFNDEF INTEGER OBJ_MACRO NEWLINE SPACE TOKEN UNDEF
-%type <ival> expression INTEGER punctuator
+%type <ival> punctuator
+%type <imaxval> expression INTEGER
%type <str> content FUNC_MACRO IDENTIFIER IDENTIFIER_FINALIZED OBJ_MACRO
%type <argument_list> argument_list
%type <string_list> macro parameter_list