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Improved support of collapse_debuginfo attribute for macros.

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This commit is contained in:
Andrew Zhogin 2023-11-29 12:49:48 +07:00
parent bcae781754
commit 2b3cd46832
1 changed files with 1 additions and 9 deletions
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10
src/debuginfo/line_info.rs
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@ -68,15 +68,7 @@ pub(crate) fn get_span_loc(
// In order to have a good line stepping behavior in debugger, we overwrite debug
// locations of macro expansions with that of the outermost expansion site (when the macro is
// annotated with `#[collapse_debuginfo]` or when `-Zdebug-macros` is provided).
let span = if tcx.should_collapse_debuginfo(span) {
span
} else {
// Walk up the macro expansion chain until we reach a non-expanded span.
// We also stop at the function body level because no line stepping can occur
// at the level above that.
rustc_span::hygiene::walk_chain(span, function_span.ctxt())
};
let span = tcx.collapsed_debuginfo(span, function_span);
match tcx.sess.source_map().lookup_line(span.lo()) {
Ok(SourceFileAndLine { sf: file, line }) => {
let line_pos = file.lines()[line];