shithub: libdraw-zig

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fix segfault

--- a/test.zig

+++ b/test.zig

@@ -1,11 +1,13 @@

 const std = @import("std");

 var display: *Display = undefined;

-var _screen: ?*Screen = undefined;

-var screen: ?*Image = undefined;

+var _screen: ?*Screen = null;

+var screen: ?*Image = null;

 pub fn main() !void {

     const ally = std.heap.page_allocator;

-    try initDraw(ally, null, "bruh");

-    std.debug.print("errstr: {s}\n", .{std.os.plan9.errstr()});

+    initDraw(ally, null, "bruh") catch |e| {

+        std.debug.print("errstr: {s}\n", .{std.os.plan9.errstr()});

+        return e;

+    };

 }

 pub fn parseIntSkipPreceedingSpaces(comptime T: type, buf: []const u8) !T {

@@ -220,11 +222,11 @@

             .defaultfont = {},

             .subfont = {},

         };

+        disp.buf = try ally.alloc(u8, bufsz + 5); // +5 for flush message;

         errdefer ally.free(disp.buf);

+        disp.bufp = disp.buf.ptr;

         disp.white = try disp.allocImage(Rectangle.init(0, 0, 1, 1), Chan.GREY1, true, DColor.White);

         disp.black = try disp.allocImage(Rectangle.init(0, 0, 1, 1), Chan.GREY1, true, DColor.Black);

-        disp.buf = try ally.alloc(u8, bufsz + 5); // +5 for flush message;

-        disp.bufp = disp.buf.ptr;

         // disp.error = error;

         disp.windir = try ally.dupe(u8, options.windir);

         errdefer ally.free(disp.windir);

@@ -476,6 +478,7 @@

             r = r.inset(Borderwidth);

         }

         std.debug.print("about to call _allocWindow", .{});

+        std.debug.print("winp: {*}", .{winp.*.?});

         winp.* = self._allocWindow(winp.*.?, scrp.*.?, r, ref, DColor.White) catch |err| {

             std.debug.print("could not alloc window {}\n", .{err});

             // self.freeScreen(scrp.*.?);