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72b1a166 FG |
1 | // compile-flags: -Cllvm-args=-not-a-real-llvm-arg |
2 | // normalize-stderr-test "--help" -> "-help" | |
3 | // normalize-stderr-test "\n(\n|.)*" -> "" | |
4 | ||
5 | // I'm seeing "--help" locally, but "-help" in CI, so I'm normalizing it to just "-help". | |
6 | ||
7 | // Note that the rustc-supplied "program name", given when invoking LLVM, is used by LLVM to | |
8 | // generate user-facing error messages and a usage (--help) messages. If the program name is | |
9 | // `rustc`, the usage message in response to `--llvm-args="--help"` starts with: | |
10 | // ``` | |
11 | // USAGE: rustc [options] | |
12 | // ``` | |
13 | // followed by the list of options not to `rustc` but to `llvm`. | |
14 | // | |
15 | // On the other hand, if the program name is set to `rustc -Cllvm-args="..." with`, the usage | |
16 | // message is more clear: | |
17 | // ``` | |
18 | // USAGE: rustc -Cllvm-args="..." with [options] | |
19 | // ``` | |
20 | // This test captures the effect of the current program name setting on LLVM command line | |
21 | // error messages. | |
22 | fn main() {} |