[llvm] 51a3788 - [TableGen] Separate string when digit follows octal escape (#207807)

[via llvm-commits]

Author: Alexis Engelke
Date: 2026-07-07T07:18:21+02:00
New Revision: 51a378885ae5f48c2b1521700fd5732a5aae00aa

URL: https://github.com/llvm/llvm-project/commit/51a378885ae5f48c2b1521700fd5732a5aae00aa
DIFF: https://github.com/llvm/llvm-project/commit/51a378885ae5f48c2b1521700fd5732a5aae00aa.diff

LOG: [TableGen] Separate string when digit follows octal escape (#207807)

Silence MSVC warning C4125 by separating the string literals when an
octal escape sequence is followed by a decimal char.

Added: 
    

Modified: 
    llvm/lib/TableGen/StringToOffsetTable.cpp

Removed: 
    


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diff  --git a/llvm/lib/TableGen/StringToOffsetTable.cpp b/llvm/lib/TableGen/StringToOffsetTable.cpp
index 06d8240486245..546a11ac1287f 100644
--- a/llvm/lib/TableGen/StringToOffsetTable.cpp
+++ b/llvm/lib/TableGen/StringToOffsetTable.cpp
@@ -118,6 +118,12 @@ void StringToOffsetTable::EmitString(raw_ostream &O) const {
       O << EscapedStr[++i];
       O << EscapedStr[++i];
       CharsPrinted += 3;
+      if (i + 1 < EscapedStr.size() && isDigit(EscapedStr[i + 1])) {
+        // If a digit follows after an octal literal, separate the string
+        // literals to silence MSVC warning C4125.
+        O << "\" \"";
+        CharsPrinted += 3;
+      }
     } else {
       O << EscapedStr[++i];
       ++CharsPrinted;