[clang] Use CPlusPlus language option instead of Bool (#80975)

As it was pointed out in
#80724, we should not be
checking `getLangOpts().Bool` when determining something related to
logical operators, since it only indicates that bool keyword is present,
not which semantic logical operators have. As a side effect a missing
`-Wpointer-bool-conversion` in OpenCL C was restored since like C23,
OpenCL C has bool keyword but logical operators still return int.

Author: Fznamznon

clang/lib/Sema/SemaChecking.cpp

@@ -16129,10 +16129,10 @@ static void CheckConditionalOperator(Sema &S, AbstractConditionalOperator *E,
 /// Check conversion of given expression to boolean.
 /// Input argument E is a logical expression.
 static void CheckBoolLikeConversion(Sema &S, Expr *E, SourceLocation CC) {
-  // While C23 does have bool as a keyword, we still need to run the bool-like
-  // conversion checks as bools are still not used as the return type from
-  // "boolean" operators or as the input type for conditional operators.
-  if (S.getLangOpts().Bool && !S.getLangOpts().C23)
+  // Run the bool-like conversion checks only for C since there bools are
+  // still not used as the return type from "boolean" operators or as the input
+  // type for conditional operators.
+  if (S.getLangOpts().CPlusPlus)
     return;
   if (E->IgnoreParenImpCasts()->getType()->isAtomicType())
     return;

clang/test/SemaOpenCL/operators.cl

@@ -118,6 +118,6 @@ kernel void pointer_ops(){
   bool b = !p;
   b = p==0;
   int i;
-  b = !&i;
+  b = !&i; // expected-warning {{address of 'i' will always evaluate to 'true'}}
   b = &i==(int *)1;
 }