[llvm] [TableGen] Check for EOF in prepSkipRegion to avoid preprocessor crash. (PR #208961)

[David Spickett via llvm-commits]

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@@ -913,8 +913,9 @@ bool TGLexer::prepSkipRegion(bool MustNeverBeFalse) {
 
   do {
     // Skip all symbols to the line end.
-    while (*CurPtr != '\n')
+    while (CurPtr != CurBuf.end() && *CurPtr != '\n') {
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DavidSpickett wrote:

https://llvm.org/docs/CodingStandards.html#don-t-use-braces-on-simple-single-statement-bodies-of-if-else-loop-statements

https://github.com/llvm/llvm-project/pull/208961