Hi,
I have a question regarding the support of non-standard C features in GCC. In
the info pages to gcc-4.0 it says "Use of the `-std' options listed above
will disable these extensions where they conflict with the C standard
version selected." (Node "Standards"). From this I assumed that to disable an
extension means to not compile a code that makes use of that extension or at
least print a warning message.
However, this code compiles fine with "gcc -c -std=c89"
struct s {
int i;
};
struct s s1 = {.i=1};
It specifies a structure member in an initialization which is forbidden
according to the message I get when I add "-pedantic": "gnu.c:5: warning:
ANSI C forbids specifying structure member to initialize".
Did I misunderstand the documentation for "-std"? How do I need to call GCC in
order to only compile source that complies with the selected standard? Is
adding "-pedantic-errors" sufficient?
Frank
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