Re: AIX and gcc (moving targets)

[p5sagit/p5-mst-13.2.git] / iperlsys.h

diff --git a/iperlsys.h b/iperlsys.h
index 6c093dd..237fab2 100644 (file)
--- a/iperlsys.h
+++ b/iperlsys.h
@@ -303,7 +303,17 @@ struct IPerlStdIOInfo
 #define PerlSIO_fputs(f,s)             fputs(s,f)
 #define PerlSIO_fflush(f)              Fflush(f)
 #define PerlSIO_fgets(s, n, fp)                fgets(s,n,fp)
-#define PerlSIO_ungetc(c,f)            ungetc(c,f)
+#if defined(VMS) && defined(__DECC)
+     /* Unusual definition of ungetc() here to accomodate fast_sv_gets()'
+      * belief that it can mix getc/ungetc with reads from stdio buffer */
+     int decc$ungetc(int __c, FILE *__stream);
+#    define PerlSIO_ungetc(c,f) ((c) == EOF ? EOF : \
+            ((*(f) && !((*(f))->_flag & _IONBF) && \
+            ((*(f))->_ptr > (*(f))->_base)) ? \
+            ((*(f))->_cnt++, *(--(*(f))->_ptr) = (c)) : decc$ungetc(c,f)))
+#else
+#  define PerlSIO_ungetc(c,f)          ungetc(c,f)
+#endif
 #define PerlSIO_fileno(f)              fileno(f)
 #define PerlSIO_fdopen(f, s)           fdopen(f,s)
 #define PerlSIO_freopen(p, m, f)       freopen(p,m,f)