efaf3eb8a0
In particular, anything that includes `none` in the target tripple, and `nvptx64-nvidia-cuda`
43 lines
1.7 KiB
Rust
43 lines
1.7 KiB
Rust
// Backtraces in internal compiler errors used to be unbearably long, spanning
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// multiple hundreds of lines. A fix was pushed in #108938, and this test gathers
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// varied metrics on level 1 and full-level backtraces to check that the output
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// was shortened down to an appropriate length.
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// See https://github.com/rust-lang/rust/issues/107910
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//@ needs-target-std
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//@ ignore-windows
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// Reason: the assert_eq! on line 32 fails, as error output on Windows is different.
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use run_make_support::rustc;
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fn main() {
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let rust_test_1 =
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rustc().set_backtrace_level("1").input("src/lib.rs").arg("-Ztreat-err-as-bug=1").run_fail();
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let rust_test_2 = rustc()
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.set_backtrace_level("full")
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.input("src/lib.rs")
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.arg("-Ztreat-err-as-bug=1")
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.run_fail();
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let mut rust_test_log_1 = rust_test_1.stderr_utf8();
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rust_test_log_1.push_str(&rust_test_1.stdout_utf8());
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let rust_test_log_1 = rust_test_log_1.as_str();
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let mut rust_test_log_2 = rust_test_2.stderr_utf8();
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rust_test_log_2.push_str(&rust_test_2.stdout_utf8());
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let rust_test_log_2 = rust_test_log_2.as_str();
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let rustc_query_count_full = count_lines_with(rust_test_log_2, "rustc_query_");
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assert!(rust_test_log_1.lines().count() < rust_test_log_2.lines().count());
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assert_eq!(
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count_lines_with(rust_test_log_2, "__rust_begin_short_backtrace"),
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count_lines_with(rust_test_log_2, "__rust_end_short_backtrace")
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);
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assert!(count_lines_with(rust_test_log_1, "rustc_query_") + 5 < rustc_query_count_full);
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assert!(rustc_query_count_full > 5);
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}
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fn count_lines_with(s: &str, search: &str) -> usize {
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s.lines().filter(|l| l.contains(search)).count()
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}
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