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-rw-r--r--src/glsl/glcpp/glcpp-lex.l8
-rw-r--r--src/glsl/glcpp/glcpp-parse.y10
-rw-r--r--src/glsl/glcpp/tests/136-plus-plus-and-minus-minus.c8
-rw-r--r--src/glsl/glcpp/tests/136-plus-plus-and-minus-minus.c.expected8
4 files changed, 33 insertions, 1 deletions
diff --git a/src/glsl/glcpp/glcpp-lex.l b/src/glsl/glcpp/glcpp-lex.l
index 466f4386053..d0894c1515b 100644
--- a/src/glsl/glcpp/glcpp-lex.l
+++ b/src/glsl/glcpp/glcpp-lex.l
@@ -469,6 +469,14 @@ HEXADECIMAL_INTEGER 0[xX][0-9a-fA-F]+[uU]?
RETURN_TOKEN (OR);
}
+"++" {
+ RETURN_TOKEN (PLUS_PLUS);
+}
+
+"--" {
+ RETURN_TOKEN (MINUS_MINUS);
+}
+
"##" {
if (! parser->skipping) {
if (parser->is_gles)
diff --git a/src/glsl/glcpp/glcpp-parse.y b/src/glsl/glcpp/glcpp-parse.y
index 38d84046d57..bc873cd99f0 100644
--- a/src/glsl/glcpp/glcpp-parse.y
+++ b/src/glsl/glcpp/glcpp-parse.y
@@ -171,7 +171,7 @@ add_builtin_define(glcpp_parser_t *parser, const char *name, int value);
/* We use HASH_TOKEN, DEFINE_TOKEN and VERSION_TOKEN (as opposed to
* HASH, DEFINE, and VERSION) to avoid conflicts with other symbols,
* (such as the <HASH> and <DEFINE> start conditions in the lexer). */
-%token COMMA_FINAL DEFINED ELIF_EXPANDED HASH_TOKEN DEFINE_TOKEN FUNC_IDENTIFIER OBJ_IDENTIFIER ELIF ELSE ENDIF ERROR IF IFDEF IFNDEF LINE PRAGMA UNDEF VERSION_TOKEN GARBAGE IDENTIFIER IF_EXPANDED INTEGER INTEGER_STRING LINE_EXPANDED NEWLINE OTHER PLACEHOLDER SPACE
+%token COMMA_FINAL DEFINED ELIF_EXPANDED HASH_TOKEN DEFINE_TOKEN FUNC_IDENTIFIER OBJ_IDENTIFIER ELIF ELSE ENDIF ERROR IF IFDEF IFNDEF LINE PRAGMA UNDEF VERSION_TOKEN GARBAGE IDENTIFIER IF_EXPANDED INTEGER INTEGER_STRING LINE_EXPANDED NEWLINE OTHER PLACEHOLDER SPACE PLUS_PLUS MINUS_MINUS
%token PASTE
%type <ival> INTEGER operator SPACE integer_constant
%type <expression_value> expression
@@ -742,6 +742,8 @@ operator:
| ',' { $$ = ','; }
| '=' { $$ = '='; }
| PASTE { $$ = PASTE; }
+| PLUS_PLUS { $$ = PLUS_PLUS; }
+| MINUS_MINUS { $$ = MINUS_MINUS; }
;
%%
@@ -1162,6 +1164,12 @@ _token_print (char **out, size_t *len, token_t *token)
case PASTE:
ralloc_asprintf_rewrite_tail (out, len, "##");
break;
+ case PLUS_PLUS:
+ ralloc_asprintf_rewrite_tail (out, len, "++");
+ break;
+ case MINUS_MINUS:
+ ralloc_asprintf_rewrite_tail (out, len, "--");
+ break;
case COMMA_FINAL:
ralloc_asprintf_rewrite_tail (out, len, ",");
break;
diff --git a/src/glsl/glcpp/tests/136-plus-plus-and-minus-minus.c b/src/glsl/glcpp/tests/136-plus-plus-and-minus-minus.c
new file mode 100644
index 00000000000..167d3c8a3cf
--- /dev/null
+++ b/src/glsl/glcpp/tests/136-plus-plus-and-minus-minus.c
@@ -0,0 +1,8 @@
+/* The body can include C expressions with ++ and -- */
+a = x++;
+b = ++x;
+c = x--;
+d = --x;
+/* But these are not legal in preprocessor expressions. */
+#if x++ > 4
+#endif
diff --git a/src/glsl/glcpp/tests/136-plus-plus-and-minus-minus.c.expected b/src/glsl/glcpp/tests/136-plus-plus-and-minus-minus.c.expected
new file mode 100644
index 00000000000..137921b1695
--- /dev/null
+++ b/src/glsl/glcpp/tests/136-plus-plus-and-minus-minus.c.expected
@@ -0,0 +1,8 @@
+0:7(12): preprocessor error: syntax error, unexpected PLUS_PLUS
+
+a = x++;
+b = ++x;
+c = x--;
+d = --x;
+
+