gcc error does not give a valid preprocessing token Walstonburg North Carolina

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gcc error does not give a valid preprocessing token Walstonburg, North Carolina

This is nowhere a valid token sequence for the C compiler. In it, you'll get: The week's top questions and answers Important community announcements Questions that need answers see an example newsletter By subscribing, you agree to the privacy policy and terms more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed On Tue, 10 May 2005, Chris wrote: We have a strange problem with macros: #define SQLST_MAP_IND_O(Tbl,Fld) i##Tbl##_O[ ##Tbl##_##Fld]=i##Tbl##_##Fld; SQLST_MAP_IND_I(RAGREEJ1,FORMFROMTMSTP); => gcc 3.3.4 gives the following error: source.c:173:40: pasting "[" and "RAGREEJ1"

That's not a valid token in C, so the compiler correctly diagnoses the error. This macro (see below) is used into several macros usage examples, by including in this article. Possibly one compiler reanalyzes the characters of a #define expansion and the other does not. -- SM Ryan http://www.rawbw.com/~wyrmwif/ Where do you get those wonderful toys? Here's the code: Middlc.h #ifndef _Middlc_h_ #define _Middlc_h_ /* * Main header file for Middlc. */ #define PY(x) printf x #define new(x) ((x##_t)malloc(sizeof(struct _##x##_t))) #define TYPE_DECL(x) typedef struct _##x##_t *##x##_t #include

When you leave ## out, the asterisk gets parsed by the compiler as a separate token, fixing the error. So if we want to be portable, we have to go even further. #define PASTE2(a, b) a ## b #define _PASTE2(a, b) PASTE2(a, b) #define PASTE3(a, b, c) _PASTE2(PASTE2(a, b), c) However: Your Microsoft and z/OS (whatever that is) compilers are broken,or you're running them in non-conforming mode. Not the answer you're looking for?

permissions on /etc/shadow Animal Shelter in Java With modern technology, is it possible to permanently stay in sunlight, without going into space? Browse other questions tagged c macros c-preprocessor or ask your own question. This is a tricky affair, since already the first naive try like this doesn't work: #define FRACTIONAL_WRONG(FRAC) .FRAC Why is that so? The actual rules of the preprocessor that allow for this are a bit more complicated, but basically in addition to alphanumeric tokens all starting parts of double constants (without prefix sign)

Nov 14 '05 #6 This discussion thread is closed Start new discussion Replies have been disabled for this discussion. What (combination of) licenses is popular for public/shared proprietary software (“Feel free to contribute, but only we can make commercial use”)? bar If you use ## you would get only 2 tokens (one identifier and one invalid token): foo .bar share|improve this answer answered Nov 4 '12 at 5:59 Pubby 34.4k685145 That is: #define TYPE_DECL(x) typedef struct _##x##_t * x##_t Why you are doing all this macro stuff is of course another matter - and using "new" as a macro is definitely

that doesn't mean there isn't any effect at all. As the error says, that's not a valid token. It is what gets parsed/lexed. Word for someone who keeps a group in good shape?

So, at least standard-wise, they are equivalent with respect to code behavior, but they may be not with respect to macro expansion. To start viewing messages, select the forum that you want to visit from the selection below. HTH, -Arthur Nov 14 '05 #5 P: n/a Chris Torek In article Arthur J. I came across http://gcc.gnu.org/ml/gcc-help/2003-04/msg00213.html so what I did was check test/ftdump.c, which was the file giving me the problem, and then omiting the ## from lines 172 and 201.

Are they, for all intents and purposes, as good as a single string, or are they a single string tied via a concatenation operator... ? more hot questions question feed lang-c about us tour help blog chat data legal privacy policy work here advertising info mobile contact us feedback Technology Life / Arts Culture / Recreation You may have to register or Login before you can post: click the register link above to proceed. Conference presenting: stick to paper material?

You want two tokens. Newbies Corner Hardware Software

The code or... You are trying to paste the strings '[' and 'RAGREEJ1', giving the token '[RAGREEJ1'. Just search ftdump.c for PRINT_MEM and FOOTPRINT and remove the ##s from each. I saved the file and hit 'make' and it compiled and works just fine.

That's what the (incorrect) use of ## tries to create. –Mike Seymour Dec 8 '14 at 15:40 add a comment| up vote 1 down vote The ## works for macros, It Karger's Algorithm question In the United States is racial, ethnic, or national preference an acceptable hiring practice for departments or companies in some situations? Now THERE is a good solution... Animal Shelter in Java Is the NHS wrong about passwords?

Browse other questions tagged c token c-preprocessor or ask your own question. You are trying to pastethe strings '[' and 'RAGREEJ1', giving the token '[RAGREEJ1'. Originally Posted by superbonzo regarding your use case, why can't you write just "#define QUOTE2(A, B) QUOTE1(A-B)" ? Copyright Quinstreet Inc. 2002-2016 418,553 Members | 1,095 Online Join Now login Ask Question Home Questions Articles Browse Topics Latest Top Members FAQ home > topics > c /

In a long sum, how can we find how many terms are preceded by the plus (or minus) sign Modulo % with big number- Infinity error - Javascript Implementation of a Good point. One said to downgrade gcc (I was using 3.3.6) because the new one is more restrictive. The time now is 09:26 PM.

Advanced Search Forum Visual C++ & C++ Programming C++ (Non Visual C++ Issues) Pasting "-" does not give a valid preprocessing token If this is your first visit, be sure to share|improve this answer answered Dec 24 '12 at 13:52 Mats Petersson 94.6k755135 1 I beg to differ. Actually, I think one of the previous answers was useful. :-) This is indeed the problem (that the ## token-pasting operator is being used inappropriately). Meaning of "oh freak" Show that a nonabelian group must have at least five distinct elements What happens if one brings more than 10,000 USD with them in the US?

If two pp-tokens pasted with "##" do not form a valid new pp-token, the behavior is undefined, and no diagnostic is required. A more direct approach would be to have a macro that pastes 6 tokens together #define PASTE6_NOTSOGOOD(a, b, c, d, e, f) a ## b ## c ## d ## e And I'm almost certain your suggestion was NOT what the original poster had in mind. Hi, I was trying to install freetype-1.x and came across this problem.

You can do it as follows: #define ADD_NAMESPACE(NS,FUNC) NS##::##FUNC Now you can use it like this: ADD_NAMESPACE(std,cout)<