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Add line output to diagnostics to help identify error locations. (#3010)

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This also makes the filename a reference to the buffer since the line
seems better to have as a reference (versus copying a string per error).
Most tests now have different line deltas due to the extra output, but
the actual errors should overall stay the same.

Some of the error locations look like they could be improved, but this
change is only making it clear where they were before.
This commit is contained in:
Jon Ross-Perkins
2023-07-21 23:53:36 +00:00
committed by GitHub
parent 9c4188ab9f
commit 65a4e006a2
131 changed files with 578 additions and 198 deletions
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toolchain/parser/testdata/function/declaration/fail_missing_name.carbon
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+3 -1
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@@ -10,5 +10,7 @@
// CHECK:STDOUT: {kind: 'FileEnd', text: ''},
// CHECK:STDOUT: ]
// CHECK:STDERR: fail_missing_name.carbon:[[@LINE+1]]:4: `fn` introducer should be followed by a name.
// CHECK:STDERR: fail_missing_name.carbon:[[@LINE+3]]:4: `fn` introducer should be followed by a name.
// CHECK:STDERR: fn ();
// CHECK:STDERR: ^
fn ();