Source/LexerParser: Suppress "Use of zero-allocated memory" warning

clang scan-build warns about YY_CURRENT_BUFFER_LVALUE being zero-
allocated, but the whole point of the macro is to know that it's
not zero. Wrap the entire file in an "#ifndef __clang_analyzer__"
block in order to suppress the warning.

Source/LexerParser/cmCommandArgumentLexer.cxx

@@ -664,6 +664,8 @@ Modify cmCommandArgumentLexer.cxx:
 
 /* IWYU pragma: no_forward_declare yyguts_t */
 
+#ifndef __clang_analyzer__ /* Suppress clang scan-build warnings */
+
 #include "cmCommandArgumentParserHelper.h"
 
 /* Replace the lexer input function.  */
@@ -2246,3 +2248,5 @@ void cmCommandArgument_SetupEscapes(yyscan_t yyscanner, bool noEscapes)
     BEGIN(ESCAPES);
   }
 }
+
+#endif /* __clang_analyzer__ */

Source/LexerParser/cmCommandArgumentLexer.in.l

@@ -18,6 +18,8 @@ Modify cmCommandArgumentLexer.cxx:
 
 /* IWYU pragma: no_forward_declare yyguts_t */
 
+#ifndef __clang_analyzer__ /* Suppress clang scan-build warnings */
+
 #include "cmCommandArgumentParserHelper.h"
 
 /* Replace the lexer input function.  */
@@ -145,3 +147,5 @@ void cmCommandArgument_SetupEscapes(yyscan_t yyscanner, bool noEscapes)
     BEGIN(ESCAPES);
   }
 }
+
+#endif /* __clang_analyzer__ */

Source/LexerParser/cmDependsJavaLexer.cxx

@@ -860,6 +860,8 @@ Modify cmDependsJavaLexer.cxx:
 
 /* IWYU pragma: no_forward_declare yyguts_t */
 
+#ifndef __clang_analyzer__ /* Suppress clang scan-build warnings */
+
 #include <iostream>
 
 #include "cmDependsJavaParserHelper.h"
@@ -2811,3 +2813,7 @@ void yyfree (void * ptr , yyscan_t yyscanner)
 }
 
 #define YYTABLES_NAME "yytables"
+
+/*--------------------------------------------------------------------------*/
+
+#endif /* __clang_analyzer__ */

Source/LexerParser/cmDependsJavaLexer.in.l

@@ -18,6 +18,8 @@ Modify cmDependsJavaLexer.cxx:
 
 /* IWYU pragma: no_forward_declare yyguts_t */
 
+#ifndef __clang_analyzer__ /* Suppress clang scan-build warnings */
+
 #include <iostream>
 
 #include "cmDependsJavaParserHelper.h"
@@ -173,3 +175,7 @@ null { PRIMITIVE; return jp_NULLLITERAL; }
 }
 
 %%
+
+/*--------------------------------------------------------------------------*/
+
+#endif /* __clang_analyzer__ */

Source/LexerParser/cmExprLexer.cxx

@@ -664,6 +664,8 @@ Modify cmExprLexer.cxx:
 
 /* IWYU pragma: no_forward_declare yyguts_t */
 
+#ifndef __clang_analyzer__ /* Suppress clang scan-build warnings */
+
 #include "cmExprParserHelper.h"
 
 /* Replace the lexer input function.  */
@@ -2223,3 +2225,7 @@ void yyfree (void * ptr , yyscan_t yyscanner)
 }
 
 #define YYTABLES_NAME "yytables"
+
+/*--------------------------------------------------------------------------*/
+
+#endif /* __clang_analyzer__ */

Source/LexerParser/cmExprLexer.in.l

@@ -18,6 +18,8 @@ Modify cmExprLexer.cxx:
 
 /* IWYU pragma: no_forward_declare yyguts_t */
 
+#ifndef __clang_analyzer__ /* Suppress clang scan-build warnings */
+
 #include "cmExprParserHelper.h"
 
 /* Replace the lexer input function.  */
@@ -61,3 +63,7 @@ Modify cmExprLexer.cxx:
 . { yyextra->UnexpectedChar(yytext[0]); }
 
 %%
+
+/*--------------------------------------------------------------------------*/
+
+#endif /* __clang_analyzer__ */

Source/LexerParser/cmFortranLexer.cxx

@@ -838,6 +838,8 @@ Modify cmFortranLexer.cxx:
 
 /* IWYU pragma: no_forward_declare yyguts_t */
 
+#ifndef __clang_analyzer__ /* Suppress clang scan-build warnings */
+
 #undef YY_NO_UNPUT
 
 #define cmFortranLexer_cxx
@@ -2610,3 +2612,5 @@ YY_BUFFER_STATE cmFortranLexer_GetCurrentBuffer(yyscan_t yyscanner)
   struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
   return YY_CURRENT_BUFFER;
 }
+
+#endif /* __clang_analyzer__ */

Source/LexerParser/cmFortranLexer.in.l

@@ -27,6 +27,8 @@ Modify cmFortranLexer.cxx:
 
 /* IWYU pragma: no_forward_declare yyguts_t */
 
+#ifndef __clang_analyzer__ /* Suppress clang scan-build warnings */
+
 #undef YY_NO_UNPUT
 
 #define cmFortranLexer_cxx
@@ -183,3 +185,5 @@ YY_BUFFER_STATE cmFortranLexer_GetCurrentBuffer(yyscan_t yyscanner)
   struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
   return YY_CURRENT_BUFFER;
 }
+
+#endif /* __clang_analyzer__ */