fix broken shgetc limiter logic (wasn't working)

diff --git a/src/internal/shgetc.c b/src/internal/shgetc.c
index 82e3a4fa69152097e5c231edf8d4d8d1c82786f6..e85d38acd1b834f24fa6d5d9d7df4d8f8b13a696 100644 (file)
--- a/src/internal/shgetc.c
+++ b/src/internal/shgetc.c
@@ -13,7 +13,10 @@ void __shlim(FILE *f, off_t lim)
 int __shgetc(FILE *f)
 {
        int c;
-       if (f->shcnt >= f->shlim) return EOF;
+       if (f->shlim && f->shcnt >= f->shlim) {
+               f->shend = 0;
+               return EOF;
+       }
        c = __uflow(f);
        if (f->shlim && f->rend - f->rpos > f->shlim - f->shcnt - 1)
                f->shend = f->rpos + (f->shlim - f->shcnt - 1);

diff --git a/src/internal/shgetc.h b/src/internal/shgetc.h
index 0543cb0dc5493fbd0a644832eee122021081eb4a..7beb8ce62182b64bb6f7349640b6f2d833b113c3 100644 (file)
--- a/src/internal/shgetc.h
+++ b/src/internal/shgetc.h
@@ -6,4 +6,4 @@ int __shgetc(FILE *);
 #define shcnt(f) ((f)->shcnt + ((f)->rpos - (f)->rend))
 #define shlim(f, lim) __shlim((f), (lim))
 #define shgetc(f) (((f)->rpos < (f)->shend) ? *(f)->rpos++ : __shgetc(f))
-#define shunget(f) ((f)->rend ? (void)(f)->rpos-- : (void)0)
+#define shunget(f) ((f)->shend ? (void)(f)->rpos-- : (void)0)