glcpp: Remove calls to exit().

Calling exit() would be really bad once integrated into mesa.  Even in
the standalone binary, we want to print the error log first.

Since each case already flags an error, compilation will still fail,
but it may go on (with something fudged) and generate more errors.

diff --git a/glcpp/glcpp-parse.y b/glcpp/glcpp-parse.y
index 74159c1..984a476 100644 (file)
--- a/glcpp/glcpp-parse.y
+++ b/glcpp/glcpp-parse.y
@@ -951,7 +951,10 @@ _glcpp_parser_evaluate_defined (glcpp_parser_t *parser,
                        next = next->next;
                if (next == NULL || next->token->type != IDENTIFIER) {
                        yyerror (&node->token->location, parser, "operator \"defined\" requires an identifier\n");
-                       exit (1);
+                       /* Already flagged an error; fake it. */
+                       node->token->type = INTEGER;
+                       node->token->value.ival = 0;
+                       return;
                }
                macro = hash_table_find (parser->defines,
                                         next->token->value.str);
@@ -1098,7 +1101,6 @@ _glcpp_parser_expand_function (glcpp_parser_t *parser,
                return NULL;
        case FUNCTION_UNBALANCED_PARENTHESES:
                glcpp_error (&node->token->location, parser, "Macro %s call has unbalanced parentheses\n", identifier);
-               exit (1);
                return NULL;
        }
 
@@ -1424,11 +1426,9 @@ _check_for_reserved_macro_name (glcpp_parser_t *parser, YYLTYPE *loc,
         */
        if (strncmp(identifier, "__", 2) == 0) {
                glcpp_error (loc, parser, "Macro names starting with \"__\" are reserved.\n");
-               exit(1);
        }
        if (strncmp(identifier, "GL_", 3) == 0) {
                glcpp_error (loc, parser, "Macro names starting with \"GL_\" are reserved.\n");
-               exit(1);
        }
 }
 
@@ -1611,7 +1611,7 @@ _glcpp_parser_skip_stack_change_if (glcpp_parser_t *parser, YYLTYPE *loc,
 {
        if (parser->skip_stack == NULL) {
                glcpp_error (loc, parser, "%s without #if\n", type);
-               exit (1);
+               return;
        }
 
        if (parser->skip_stack->type == SKIP_TO_ELSE) {
@@ -1629,7 +1629,7 @@ _glcpp_parser_skip_stack_pop (glcpp_parser_t *parser, YYLTYPE *loc)
 
        if (parser->skip_stack == NULL) {
                glcpp_error (loc, parser, "#endif without #if\n");
-               exit (1);
+               return;
        }
 
        node = parser->skip_stack;