Rollup merge of #62450 - nagisa:reclimit, r=pnkfelix

Raise the default recursion limit to 128

The previous limit of 64 is being (just) barely hit by genuine code out there, which is causing issues like https://github.com/rust-lang/rust/issues/62059 to rear their end.

Ideally, we wouldn’t have such arbitrary limits at all, but while we do, it makes a lot of sense to just raise this limit whenever genuine use-cases end up hitting it.

r? @pnkfelix

Fixes https://github.com/rust-lang/rust/issues/62059

1 files changed, 104 insertions, 0 deletions

diff --git a/src/test/rustdoc/deep-structures.rs b/src/test/rustdoc/deep-structures.rs
new file mode 100644
index 00000000000..cd3b0d3ec97
--- /dev/null
+++ b/src/test/rustdoc/deep-structures.rs
@@ -0,0 +1,104 @@
+// This test verifies that we do not hit recursion limit trying to prove auto-trait bounds for
+// reasonably deep structures.
+
+#![crate_type="rlib"]
+
+pub struct A01(A02);
+pub struct A02(A03);
+pub struct A03(A04);
+pub struct A04(A05);
+pub struct A05(A06);
+pub struct A06(A07);
+pub struct A07(A08);
+pub struct A08(A09);
+pub struct A09(A10);
+pub struct A10(A11);
+pub struct A11(A12);
+pub struct A12(A13);
+pub struct A13(A14);
+pub struct A14(A15);
+pub struct A15(A16);
+pub struct A16(A17);
+pub struct A17(A18);
+pub struct A18(A19);
+pub struct A19(A20);
+pub struct A20(A21);
+pub struct A21(A22);
+pub struct A22(A23);
+pub struct A23(A24);
+pub struct A24(A25);
+pub struct A25(A26);
+pub struct A26(A27);
+pub struct A27(A28);
+pub struct A28(A29);
+pub struct A29(A30);
+pub struct A30(A31);
+pub struct A31(A32);
+pub struct A32(A33);
+pub struct A33(A34);
+pub struct A34(A35);
+pub struct A35(A36);
+pub struct A36(A37);
+pub struct A37(A38);
+pub struct A38(A39);
+pub struct A39(A40);
+pub struct A40(A41);
+pub struct A41(A42);
+pub struct A42(A43);
+pub struct A43(A44);
+pub struct A44(A45);
+pub struct A45(A46);
+pub struct A46(A47);
+pub struct A47(A48);
+pub struct A48(A49);
+pub struct A49(A50);
+pub struct A50(A51);
+pub struct A51(A52);
+pub struct A52(A53);
+pub struct A53(A54);
+pub struct A54(A55);
+pub struct A55(A56);
+pub struct A56(A57);
+pub struct A57(A58);
+pub struct A58(A59);
+pub struct A59(A60);
+pub struct A60(A61);
+pub struct A61(A62);
+pub struct A62(A63);
+pub struct A63(A64);
+pub struct A64(A65);
+pub struct A65(A66);
+pub struct A66(A67);
+pub struct A67(A68);
+pub struct A68(A69);
+pub struct A69(A70);
+pub struct A70(A71);
+pub struct A71(A72);
+pub struct A72(A73);
+pub struct A73(A74);
+pub struct A74(A75);
+pub struct A75(A76);
+pub struct A76(A77);
+pub struct A77(A78);
+pub struct A78(A79);
+pub struct A79(A80);
+pub struct A80(A81);
+pub struct A81(A82);
+pub struct A82(A83);
+pub struct A83(A84);
+pub struct A84(A85);
+pub struct A85(A86);
+pub struct A86(A87);
+pub struct A87(A88);
+pub struct A88(A89);
+pub struct A89(A90);
+pub struct A90(A91);
+pub struct A91(A92);
+pub struct A92(A93);
+pub struct A93(A94);
+pub struct A94(A95);
+pub struct A95(A96);
+pub struct A96(A97);
+pub struct A97(A98);
+pub struct A98(A99);
+pub struct A99;