$stringify would handle parens incorrectly (#3316)

* $stringify would handle parens incorrectly

Closes #3311

* Fix bug in the proper way. Add releasenotes.

---------

Co-authored-by: Christoffer Lerno <christoffer@aegik.com>

Author: R-Camacho

releasenotes.md

@@ -8,6 +8,7 @@
 ### Stdlib changes
 
 ### Fixes
+- `$stringify` would sometimes include parens.
 
 ## 0.8.1 Change list
 

src/compiler/parse_expr.c

@@ -720,7 +720,7 @@ static Expr *parse_ct_stringify(ParseContext *c, Expr *left, SourceLoc *lhs_star
 	advance(c);
 	CONSUME_OR_RET(TOKEN_LPAREN, poisoned_expr);
 	ASSIGN_EXPR_OR_RET(Expr *inner, parse_expr(c), poisoned_expr);
-	const char *end = c->lexer.lexing_start - 1;
+	const char *end = c->span.offset + c->lexer.file_begin;
 	CONSUME_OR_RET(TOKEN_RPAREN, poisoned_expr);
 	if (inner->expr_kind == EXPR_HASH_IDENT || (inner->expr_kind == EXPR_VAARG))
 	{

test/test_suite/compile_time/stringify_parens.c3t

@@ -0,0 +1,22 @@
+// #target: macos-x64
+module test;
+import std::io;
+
+fn void main()
+{
+    io::printfn($stringify(asd) );
+    io::printfn($stringify(asd  ) );
+    io::printfn($stringify(((((asd))))));
+    io::printfn($stringify( (1 + 1) ));
+    io::printfn($stringify("()"));
+    io::printfn($stringify(")))" ) );
+}
+
+/* #expect: test.ll
+
+@.str = private unnamed_addr constant [4 x i8] c"asd\00", align 1
+@.str.1 = private unnamed_addr constant [6 x i8] c"asd  \00", align 1
+@.str.2 = private unnamed_addr constant [12 x i8] c"((((asd))))\00", align 1
+@.str.3 = private unnamed_addr constant [10 x i8] c" (1 + 1) \00", align 1
+@.str.4 = private unnamed_addr constant [5 x i8] c"\22()\22\00", align 1
+@.str.5 = private unnamed_addr constant [7 x i8] c"\22)))\22 \00", align 1