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make panictry! private to libsyntax

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This commit completely removes usage of the `panictry!` macro from
outside libsyntax. The macro causes parse errors to be fatal, so using
it in libsyntax_ext caused parse failures *within* a syntax extension to
be fatal, which is probably not intended.

Furthermore, this commit adds spans to diagnostics emitted by empty
extensions if they were missing, à la #56491.
This commit is contained in:
Andy Russell
2018-12-04 14:10:32 -05:00
parent cae164753f
commit 0a6fb84738
22 changed files with 451 additions and 134 deletions
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4
src/test/rustdoc-ui/failed-doctest-output.stdout
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@@ -12,7 +12,7 @@ error[E0425]: cannot find value `no` in this scope
3 | no
| ^^ not found in this scope
thread '$DIR/failed-doctest-output.rs - OtherStruct (line 17)' panicked at 'couldn't compile the test', src/librustdoc/test.rs:316:13
thread '$DIR/failed-doctest-output.rs - OtherStruct (line 17)' panicked at 'couldn't compile the test', src/librustdoc/test.rs:321:13
note: Run with `RUST_BACKTRACE=1` environment variable to display a backtrace.
---- $DIR/failed-doctest-output.rs - SomeStruct (line 11) stdout ----
@@ -21,7 +21,7 @@ thread '$DIR/failed-doctest-output.rs - SomeStruct (line 11)' panicked at 'test
thread 'main' panicked at 'oh no', $DIR/failed-doctest-output.rs:3:1
note: Run with `RUST_BACKTRACE=1` environment variable to display a backtrace.
', src/librustdoc/test.rs:351:17
', src/librustdoc/test.rs:356:17
failures: