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鎼炴寕浣犵殑C++緙栬瘧鍣?/span>
Play with the compiler鏄竴浠跺緢鏈夎叮鐨勪簨鎯咃紝緙栬瘧姝誨驚鐜殑紼嬪簭渚挎槸鍏朵腑涔嬩竴銆傝鎴戜滑鍜岀紪璇戝櫒涓璧峰仛娓告垙鍚
1銆丳reprocess
a銆丼elf Include錛圙CC only錛?br>涓鑸殑緙栬瘧鍣ㄩ兘鏈塱nclude宓屽灞傛暟鐨勯檺鍒訛紝鎵浠ヤ綘闇瑕佸湪閫傚綋鐨勬椂鍊欏仠姝㈠祵濂椼傚埄鐢℅CC鎻愪緵鐨刜_INCLUDE_LEVEL__鍙互寰堣交鏉劇殑瀹炵幇榪欎竴鐐廣傛椂闂村鏉傚害鏄痭a錛宯鏄瘡灞傜殑Self Include嬈℃暟錛宎鏄祵濂楀眰鏁般?br>鍦ㄥ叾瀹冪紪璇戝櫒涓彲浠ュ啓鍑虹被浼肩殑浠ｇ爜錛屽彧鏄病榪欎箞綆媧?br>
__INCLUDE_LEVEL__<199
__FILE__
__FILE__
#defineF1(x) x,x
F2(x) F1(x),F1(x)
F3(x) F2(x),F2(x)
F4(x) F3(x),F3(x)
F5(x) F4(x),F4(x)
F6(x) F5(x),F5(x)
F7(x) F6(x),F6(x)
F8(x) F7(x),F7(x)
F9(x) F8(x),F8(x)
G1(x) F9(x),F9(x)
G2(x) G1(x),G1(x)
G3(x) G2(x),G2(x)
G4(x) G3(x),G3(x)
G5(x) G4(x),G4(x)
G6(x) G5(x),G5(x)
G7(x) G6(x),G6(x)
G8(x) G7(x),G7(x)
G9(x) G8(x),G8(x)
intmain()
{
G9(1);
} 褰撶劧錛屼笉鍚岀殑緙栬瘧鍣ㄥ棰勫鐞嗙粨鏋滄孩鍑虹殑澶勭悊涔熶笉灝界浉鍚岋紝涓鑸笂闈㈢殑浠ｇ爜涓嶄細(xì)杈懼埌棰勬湡鐨勭洰鐨勩侴CC浼?xì)鐩存帴鍑洪敊锛岃孷C浼?xì)鍑篒CE錛圛nternal Compiler Error錛?br>
2銆乀emplate
a銆佸祵濂?br>綾諱技鐨勶紝妯＄増涔熸湁宓屽灞傛暟闄愬埗錛屼絾鏄篃寰堝鏄撶粫榪囥?br>GCC鐨勬煇浜涚増鏈氨浼?xì)琚笅闈㈢殑浠ｇ爜鎼炴寕锛圴C涓嶄細(xì)錛夛細(xì)
<cstddef>
<class T>
Test {
static const size_t Value=Test<Test<T> >::Value;
};
<cstddef>
INNER(A3,N3,A2,N2) \
template<size_t N3>\
A3\
{\
enum {N=A3<N3-1>::N+1};\
};\
template<>\
A3<0>\
{\
enum {N=A2<N2-1>::N};\
};
OUTER(A2,N2,A1,N1,A3,CONTENT) \
template<size_t N2>\
A2\
{\
CONTENT\
\
enum {N=A3<N2>::N};\
};\
template<>\
A2<0>\
{\
enum {N=A1<N1-1>::N};\
};
LEVEL2(a,b,c) INNER(A##b,N##b,A##a,N##a)
LEVEL3(a,b,c) OUTER(A##b,N##b,A##a,N##a,A##c,LEVEL2(a##1,b##1,c##1))
LEVEL4(a,b,c) OUTER(A##b,N##b,A##a,N##a,A##c,LEVEL3(a##1,b##1,c##1))
LEVEL5(a,b,c) OUTER(A##b,N##b,A##a,N##a,A##c,LEVEL4(a##1,b##1,c##1))
templatesize_t N1>
A1
{
LEVEL5(1,11,111)
enum {N=A11<N1>::N};
};
<>
A1<0>
{
enum {N=0};
};
A member or a member template may be nested within many enclosing class templates. In an explicit specialization for such a member, the member declaration shall be preceded by a template<> for each enclosing class template that is explicitly specialized
鍩轟簬綾諱技鐨勬濇兂錛孏CC&VC閫氱敤鐨勭増鏈篃涓嶉毦鍐欏嚭銆?br>
b銆丱LE
铏界劧閫氬父妯＄増鐨勭紪璇戞椂闂撮兘鏄疧(n)鐨勶紝涓嶈繃寰堝緙栬瘧鍣ㄧ殑閿欒淇℃伅杈撳嚭鍗存槸O(n2)鐨勶紝鍒╃敤榪欎竴鐐?寰堥暱鐨勭被鍚嶏紝寰堝鏄撻犳垚閿欒淇℃伅鐨凮utput Limit Exceed銆傛瘮濡傦細(xì)
ClassName A
ClassName
{
enum {Value=ClassName<N-1>::Value};
};
main()
{
int n=ClassName<0>::Value;
}
PS錛氫笂闈㈢殑浠ｇ爜鍦╒C8閲屼細(xì)鐩存帴鍑篒CE錛屼笉榪囪繖鏄疺C8鐨刡ug銆俈C2008娌℃湁榪欐牱鐨勯棶棰?br>
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榛勫彾婊″湴縐嬪凡鍑夛紝璞皵鍑忥紝鎬ㄦ皵闀?
闀垮瓙鏈夋劅錛屾垜涓烘瘯涓氱媯銆?br>鐙傞閫愬彾鍙堢粡騫達(dá)紝鐧芥棩鐭紝鎰佹棩闀?
闀挎唱娌捐褰㈠鎯紝欏鴻呮槍錛岄嗚呬骸?
浜″懡鐜夋硥錛屾暍鍡滆璞虹嫾銆?br>鐙煎瓙閲庡績(jī)涓嶆浘鎯籌細(xì)姣曚笟闅撅紝灝變笟榛?
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鏍?nbsp; 棰? Re: 鐖剁被鐨勬柟娉曡兘鍚︿嬌鐢ㄥ瓙綾葷殑鐗規(guī)湁灞炴?br>鍙戜俊绔? 椋樻負(fù)姘翠簯闂?(Mon Aug 27 22:12:27 2007), 绔欏唴淇′歡
鎴戝湪鍏徃鍙惉璇寸敓濂沖効鐨勶紝娌℃湁鍚鐢熷効瀛愮殑銆備腑鍥姐佸嵃搴︺佺編鍥介兘涓鏍楓?/p>
銆?鍦?shifan (Au revoir, mes amis) 鐨勫ぇ浣滀腑鎻愬埌: 銆?br>: 搴旇璇達(dá)紝鑰佺埜鍦ㄦ病XX鐨勬椂鍊欙紝涔熸棤娉曞喅瀹氬悗浠ｆ槸鐢鋒槸濂?br>: 銆?鍦?morningcs (BG5HLI·"閹?閲戝瞾鏈?#183;CS0306 Forever) 鐨勫ぇ浣滀腑鎻愬埌: 銆?br>: : 浣犺佺埜鍦ㄤ綘灝忕殑鏃跺欎篃涓嶇煡閬撲綘浠ュ悗鏈夊暐鐗歸暱
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鍘熸潵琚紑姘寸儷鏄繖涓劅瑙夈傘傘?
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