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概要[]

904 /* In an INTEGER_CST, REAL_CST, COMPLEX_CST, or VECTOR_CST, this means
905    there was an overflow in folding, and no warning has been issued
906    for this subexpression.  TREE_OVERFLOW implies TREE_CONSTANT_OVERFLOW,
907    but not vice versa.
908 
909    ??? Apparently, lots of code assumes this is defined in all
910    expressions.  */

ちなみに,struct tree_common 型の public_flag メンバは,以下のような使われ方もしているようだ.~

331    public_flag:
332 
333        TREE_OVERFLOW in
334            INTEGER_CST, REAL_CST, COMPLEX_CST, VECTOR_CST
335            ??? and other expressions?
336        TREE_PUBLIC in
337            VAR_DECL or FUNCTION_DECL or IDENTIFIER_NODE
338        ASM_VOLATILE_P in
339            ASM_EXPR
340        TYPE_CACHED_VALUES_P in
341           ..._TYPE
342        SAVE_EXPR_RESOLVED_P in
343           SAVE_EXPR

引数[]

実装[]

911 #define TREE_OVERFLOW(NODE) ((NODE)->common.public_flag)



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