1 files changed, 16 insertions, 3 deletions

diff --git a/src/install/semver.zig b/src/install/semver.zig
index f76238fa5..9572b85e2 100644
--- a/src/install/semver.zig
+++ b/src/install/semver.zig
@@ -576,23 +576,36 @@ pub const SlicedString = struct {
     slice: string,
 
     pub inline fn init(buf: string, slice: string) SlicedString {
+        if (Environment.allow_assert) {
+            if (@intFromPtr(buf.ptr) > @intFromPtr(slice.ptr)) {
+                @panic("SlicedString.init buf is not in front of slice");
+            }
+        }
         return SlicedString{ .buf = buf, .slice = slice };
     }
 
     pub inline fn external(this: SlicedString) ExternalString {
-        if (comptime Environment.allow_assert) std.debug.assert(@intFromPtr(this.buf.ptr) <= @intFromPtr(this.slice.ptr) and ((@intFromPtr(this.slice.ptr) + this.slice.len) <= (@intFromPtr(this.buf.ptr) + this.buf.len)));
+        if (comptime Environment.allow_assert) {
+            std.debug.assert(@intFromPtr(this.buf.ptr) <= @intFromPtr(this.slice.ptr) and ((@intFromPtr(this.slice.ptr) + this.slice.len) <= (@intFromPtr(this.buf.ptr) + this.buf.len)));
+        }
 
         return ExternalString.init(this.buf, this.slice, bun.Wyhash.hash(0, this.slice));
     }
 
     pub inline fn value(this: SlicedString) String {
-        if (comptime Environment.allow_assert) std.debug.assert(@intFromPtr(this.buf.ptr) <= @intFromPtr(this.slice.ptr) and ((@intFromPtr(this.slice.ptr) + this.slice.len) <= (@intFromPtr(this.buf.ptr) + this.buf.len)));
+        if (comptime Environment.allow_assert) {
+            std.debug.assert(@intFromPtr(this.buf.ptr) <= @intFromPtr(this.slice.ptr) and ((@intFromPtr(this.slice.ptr) + this.slice.len) <= (@intFromPtr(this.buf.ptr) + this.buf.len)));
+        }
 
         return String.init(this.buf, this.slice);
     }
 
     pub inline fn sub(this: SlicedString, input: string) SlicedString {
-        std.debug.assert(@intFromPtr(this.buf.ptr) <= @intFromPtr(this.buf.ptr) and ((@intFromPtr(input.ptr) + input.len) <= (@intFromPtr(this.buf.ptr) + this.buf.len)));
+        if (Environment.allow_assert) {
+            if (!(@intFromPtr(this.buf.ptr) <= @intFromPtr(this.buf.ptr) and ((@intFromPtr(input.ptr) + input.len) <= (@intFromPtr(this.buf.ptr) + this.buf.len)))) {
+                @panic("SlicedString.sub input is not a substring of the slice");
+            }
+        }
         return SlicedString{ .buf = this.buf, .slice = input };
     }
 };