Remove unused scratch_buffer_dupfree

Turns out scratch_buffer_dupfree internal API was unused since commit ef07000 stdlib: Simplify buffer management in canonicalize And the related test in malloc/tst-scratch_buffer had issues so it's better to remove it completely. Reviewed-by: Florian Weimer <[email protected]>
ahjragaas · Oct 28, 2022 · 8c77e26 · 8c77e26
1 parent 2eeeee7
commit 8c77e26
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Showing 5 changed files with 0 additions and 79 deletions.
diff --git a/include/scratch_buffer.h b/include/scratch_buffer.h
@@ -132,20 +132,4 @@ scratch_buffer_set_array_size (struct scratch_buffer *buffer,
 			 (buffer, nelem, size));
 }
 
-/* Return a copy of *BUFFER's first SIZE bytes as a heap-allocated block,
-   deallocating *BUFFER if it was heap-allocated.  SIZE must be at
-   most *BUFFER's size.  Return NULL (setting errno) on memory
-   exhaustion.  */
-void *__libc_scratch_buffer_dupfree (struct scratch_buffer *buffer,
-                                     size_t size);
-libc_hidden_proto (__libc_scratch_buffer_dupfree)
-
-/* Alias for __libc_scratch_dupfree.  */
-static __always_inline void *
-scratch_buffer_dupfree (struct scratch_buffer *buffer, size_t size)
-{
-  void *r = __libc_scratch_buffer_dupfree (buffer, size);
-  return __glibc_likely (r != NULL) ? r : NULL;
-}
-
 #endif /* _SCRATCH_BUFFER_H */
diff --git a/malloc/Makefile b/malloc/Makefile
@@ -123,7 +123,6 @@ tests-mcheck = $(filter-out $(tests-exclude-mcheck) $(tests-static), $(tests))
 endif
 
 routines = malloc mcheck mtrace obstack reallocarray \
-  scratch_buffer_dupfree \
   scratch_buffer_grow scratch_buffer_grow_preserve \
   scratch_buffer_set_array_size \
   dynarray_at_failure \

diff --git a/malloc/Versions b/malloc/Versions
@@ -75,7 +75,6 @@ libc {
     __libc_thread_freeres;
 
     # struct scratch_buffer support
-    __libc_scratch_buffer_dupfree;
     __libc_scratch_buffer_grow;
     __libc_scratch_buffer_grow_preserve;
     __libc_scratch_buffer_set_array_size;

diff --git a/malloc/scratch_buffer_dupfree.c b/malloc/scratch_buffer_dupfree.c
diff --git a/malloc/tst-scratch_buffer.c b/malloc/tst-scratch_buffer.c
@@ -151,26 +151,6 @@ do_test (void)
 	  && array_size_must_fail (4, ((size_t)-1) / 4)))
 	return 1;
   }
-  {
-    struct scratch_buffer buf;
-    scratch_buffer_init (&buf);
-    memset (buf.data, '@', buf.length);
-
-    size_t sizes[] = { 16, buf.length, buf.length + 16 };
-    for (int i = 0; i < array_length (sizes); i++)
-      {
-        /* The extra size is unitialized through realloc.  */
-        size_t l = sizes[i] > buf.length ? sizes[i] : buf.length;
-        void *r = scratch_buffer_dupfree (&buf, l);
-        void *c = xmalloc (l);
-        memset (c, '@', l);
-        TEST_COMPARE_BLOB (r, l, buf.data, l);
-        free (r);
-        free (c);
-      }
-
-    scratch_buffer_free (&buf);
-  }
   return 0;
 }