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Re: [MiNT] [Mint-cvs] [FreeMiNT CVS] freemint/sys/sockets/inet4



Am 02.01.2010, 00:54 Uhr, schrieb Vincent Rivière <vincent.riviere@freesbee.fr>:

2) Preprocessor bug on #if
gcc 2.95.3 has bug in '!=' operator for negative constants

For example, the following test is misinterpreted by GCC 2.95.3
#if EOF != -1

It has to be written like this to be compatible with all compilers:
#if !(EOF == -1)

Do you mean something like this:



#define X -1
#define Y 1

#if X != -1
#error  "X != -1"
#endif
#if Y == -1
#error  "Y == -1"
#endif
#if X == -1
#error  "X == -1"
#endif


Both cross-gcc 2.95.3 and cygwin-gcc (3.x) say

t.c:11: #error "X == -1"



--
Helmut Karlowski