next porting question for gcj

Christopher Faylor
Sun Apr 15 21:06:00 GMT 2001

On Mon, Apr 16, 2001 at 12:00:07AM -0400, DJ Delorie wrote:
>A simple test will show you:
>  char *b = alloca(500);
>  return b[3];
>Compile with gcc, and you'll see that alloca is implemented directly,
>without function calls.
>__builtin_alloca is the internal way gcc implements it; either works
>just fine but __builtin_alloca is more immune to being #define'd to
>something else.  It's not specific to Cygwin.

We did have to:

#define alloca __builtin_alloca

at one point in winsup/... at one point, though.


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