Re: cpp oddness

On Sun, Feb 09, 2003 at 04:47:55PM -0500, Clint Adams wrote: > > Any identifier without a definition is considered to be 0 in an #if. > > Macro substitution is performed on TEST_THREE, which converts it to the > > identifier TEST_THREE - still not #define'd. So it's 0. > > So, to be clear, it's

Re: cpp oddness

> Any identifier without a definition is considered to be 0 in an #if. > Macro substitution is performed on TEST_THREE, which converts it to the > identifier TEST_THREE - still not #define'd. So it's 0. So, to be clear, it's impossible to compare RLIMIT defines in the preprocessor, then?

Re: cpp oddness

On Sun, Feb 09, 2003 at 12:40:07PM -0500, Clint Adams wrote: > > The output of "cpp test.c" on the attached file: > > And cpp -Wundef test.c: > > # 1 "test.c" > # 1 "" > # 1 "" > # 1 "test.c" > test.c:5:2: warning: #warning TEST_FIVE defined > test.c:8:2: warning: #warning TEST_NINE defined > # 1

Re: cpp oddness

> The output of "cpp test.c" on the attached file: And cpp -Wundef test.c: # 1 "test.c" # 1 "" # 1 "" # 1 "test.c" test.c:5:2: warning: #warning TEST_FIVE defined test.c:8:2: warning: #warning TEST_NINE defined # 15 "test.c" test.c:24:6: warning: "TEST_FOUR" is not defined test.c:24:19: warning: