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fix: crash while rendering chunks longer than 4096 bytes (long lines)

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Proof that I was a Zig noob not too long ago. The defer of course runs
immediately.
This commit is contained in:
CJ van den Berg 2024-04-09 18:12:22 +02:00
parent e236f3f3c6
commit 2fafceab83
1 changed files with 8 additions and 7 deletions
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15
src/tui/editor.zig
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@ -593,13 +593,14 @@ pub const Editor = struct {
const bufsize = 4095; const bufsize = 4095;
var bufstatic: [bufsize:0]u8 = undefined; var bufstatic: [bufsize:0]u8 = undefined;
const len = leaf.buf.len; const len = leaf.buf.len;
var chunk: [:0]u8 = if (len > bufsize) var chunk_alloc: ?[:0]u8 = null;
std.heap.c_allocator.allocSentinel(u8, len, 0) catch |e| return Buffer.Walker{ .err = e } var chunk: [:0]u8 = if (len > bufsize) ret: {
else const ptr = self_.a.allocSentinel(u8, len, 0) catch |e| return Buffer.Walker{ .err = e };
&bufstatic; chunk_alloc = ptr;
if (len > bufsize) { break :ret ptr;
defer std.heap.c_allocator.free(chunk); } else &bufstatic;
} defer if (chunk_alloc) |p| self_.a.free(p);
@memcpy(chunk[0..leaf.buf.len], leaf.buf); @memcpy(chunk[0..leaf.buf.len], leaf.buf);
chunk[leaf.buf.len] = 0; chunk[leaf.buf.len] = 0;
chunk.len = leaf.buf.len; chunk.len = leaf.buf.len;