core: New function gpgrt_reallocarray.

* src/init.c (_gpgrt_reallocarray): New.
* src/visibility.c (gpgrt_reallocarray): New.
* src/gpg-error.vers, src/gpg-error.def.in: Add new function.
* src/gpg-error.h.in: Add new interface.
* tests/t-malloc.c: New.
* tests/Makefile.am (TESTS): Add new test.
--

Note that this function is different from the glibc function because
it has an extra parameter which allows to clear the new elements.  A
realloc after a calloc with forgotten memset after it is a common
source of error, thus we introduce this slightly different function.

Signed-off-by: Werner Koch <[email protected]>

1 files changed, 6 insertions, 0 deletions

diff --git a/src/visibility.c b/src/visibility.c
index ea55d54..2e6aed7 100644
--- a/src/visibility.c
+++ b/src/visibility.c
@@ -764,6 +764,12 @@ gpgrt_realloc (void *a, size_t n)
 }
 
 void *
+gpgrt_reallocarray (void *a, size_t oldnmemb, size_t nmemb, size_t size)
+{
+  return _gpgrt_reallocarray (a, oldnmemb, nmemb, size);
+}
+
+void *
 gpgrt_malloc (size_t n)
 {
   return _gpgrt_malloc (n);