================
@@ -616,6 +626,62 @@ class LineJoiner {
return 1;
}
+ unsigned tryMergeNamespace(SmallVectorImpl<AnnotatedLine *>::const_iterator
I,
+ SmallVectorImpl<AnnotatedLine *>::const_iterator
E,
+ unsigned Limit) {
+ if (Limit == 0)
+ return 0;
+ if (I[1]->InPPDirective != (*I)->InPPDirective ||
+ (I[1]->InPPDirective && I[1]->First->HasUnescapedNewline)) {
+ return 0;
+ }
+ if (I + 2 == E || I[2]->Type == LT_Invalid)
+ return 0;
+
+ Limit = limitConsideringMacros(I + 1, E, Limit);
+
+ if (!nextTwoLinesFitInto(I, Limit))
+ return 0;
+
+ // Check if it's a namespace inside a namespace, and call recursively if so
+ // '3' is the sizes of the whitespace and closing brace for " _inner_ }".
+ if (I[1]->First->is(tok::kw_namespace)) {
+ if (I[1]->Last->is(TT_LineComment))
+ return 0;
+
+ const unsigned InnerLimit = Limit - I[1]->Last->TotalLength - 3;
+ const unsigned MergedLines = tryMergeNamespace(I + 1, E, InnerLimit);
+ if (!MergedLines)
----------------
owenca wrote:
```suggestion
const int InnerLimit = Limit - I[1]->Last->TotalLength - 3;
const auto MergedLines = tryMergeNamespace(I + 1, E, InnerLimit);
if (MergedLines == 0)
```
Use `int` to guard against underflow.
https://github.com/llvm/llvm-project/pull/105597
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