What's the size limit for a GCC macro expansion?

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2 total messages Started by Elizabeth Schwartz Sat, 12 Dec 1992 04:21

#740

Author: Elizabeth Schwartz
Date: Sat, 12 Dec 1992 04:21

16 lines
1121 bytes

Does anyone know what the limit is, in GNU C, of the size of
a set of pre-processor macro expansions? It appears to be greater than 
16k and less than 64k. 

By this I mean if I write: 
#define FOO(A,B) BAR(A,B) BAR(A,B)
#define BAR(A,B) FRED(A,B) FRED(A,B)

and so on....how big can the result be?  

Thanks, Betsy
--
System Administrator                  Internet: betsys@cs.umb.edu
MACS Dept, UMass/Boston               BITNET:ESCHWARTZ%UMBSKY.DNET@NS.UMB.EDU
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ANSWER: Re: What's the size limit for a GCC macro expansion?

#748

Author: Elizabeth Schwartz
Date: Mon, 14 Dec 1992 03:44

10 lines
1092 bytes

Thanks to those, including rms, who responded so quickly. GNU C
doesn't have built-in limits, wherever possible. In my case I was
running out of space in /usr/tmp when my expansion got to be around
64k.
Thanks, Betsy
--
System Administrator                  Internet: betsys@cs.umb.edu
MACS Dept, UMass/Boston               BITNET:ESCHWARTZ%UMBSKY.DNET@NS.UMB.EDU
100 Morrissey Blvd                    Staccato signals
Boston, MA 02125-3393                      of constant information....

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