Revert "[dataflow][nfc] Fix u8 string usage with c++20"

[martinboehme]

Reverts #84291

The patch broke Windows builds.

[llvmbot]

@llvm/pr-subscribers-clang-analysis

@llvm/pr-subscribers-clang

Author: None (martinboehme)

Changes

Reverts llvm/llvm-project#84291

The patch broke Windows builds.

---

Full diff: https://github.com/llvm/llvm-project/pull/84301.diff

1 Files Affected:

• (modified) clang/lib/Analysis/FlowSensitive/HTMLLogger.cpp (+1-1)

diff --git a/clang/lib/Analysis/FlowSensitive/HTMLLogger.cpp b/clang/lib/Analysis/FlowSensitive/HTMLLogger.cpp
index d9f40d28859f5e..ff4e18de2c70f1 100644
--- a/clang/lib/Analysis/FlowSensitive/HTMLLogger.cpp
+++ b/clang/lib/Analysis/FlowSensitive/HTMLLogger.cpp
@@ -500,7 +500,7 @@ class HTMLLogger : public Logger {
     for (unsigned I = 0; I < CFG.getNumBlockIDs(); ++I) {
       std::string Name = blockID(I);
       // Rightwards arrow, vertical line
-      char ConvergenceMarker[] = "\\n\u2192\u007c";
+      char ConvergenceMarker[] = u8"\\n\u2192\u007c";
       if (BlockConverged[I])
         Name += ConvergenceMarker;
       GraphS << "  " << blockID(I) << " [id=" << blockID(I) << " label=\""