diff --git a/src/Makefile.am b/src/Makefile.am
index 4e50abb..c76c812 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -95,7 +95,7 @@ libsox_la_LIBADD += @GOMP_LIBS@
 
 libsox_la_CFLAGS = @WARN_CFLAGS@
 libsox_la_LDFLAGS = @APP_LDFLAGS@ -version-info @SHLIB_VERSION@ \
-  -export-symbols-regex '^(sox_.*|lsx_(error|flush|check_read_params|(close|open)_dllibrary|(debug(_more|_most)?|fail|report|warn)_impl|eof|fail_errno|filelength|find_(enum_(text|value)|file_extension)|getopt(_init)?|lpc10_(create_(de|en)coder_state|(de|en)code)|raw(read|write)|read(_b_buf|buf|chars)|realloc|rewind|seeki|sigfigs3p?|strcasecmp|tell|unreadb|write(b|_b_buf|buf|s)))$$'
+  -export-symbols-regex '^(sox_.*|lsx_(([cm]|re)alloc.*|check_read_params|(close|open)_dllibrary|(debug(_more|_most)?|fail|report|warn)_impl|eof|error|fail_errno|filelength|find_(enum_(text|value)|file_extension)|flush|getopt(_init)?|lpc10_(create_(de|en)coder_state|(de|en)code)|raw(read|write)|read(_b_buf|buf|chars)|rewind|seeki|sigfigs3p?|strcasecmp|strdup|tell|unreadb|write(b|_b_buf|buf|s)))$$'
 
 if HAVE_WIN32_LTDL
   libsox_la_SOURCES += win32-ltdl.c win32-ltdl.h
diff --git a/src/xmalloc.c b/src/xmalloc.c
index 9bf1596..5ca7cdd 100644
--- a/src/xmalloc.c
+++ b/src/xmalloc.c
@@ -41,3 +41,13 @@ void *lsx_realloc(void *ptr, size_t newsize)
 
   return ptr;
 }
+
+void *lsx_realloc_array(void *p, size_t n, size_t size)
+{
+  if (n > (size_t)-1 / size) {
+    lsx_fail("malloc size overflow");
+    exit(2);
+  }
+
+  return lsx_realloc(p, n * size);
+}
diff --git a/src/xmalloc.h b/src/xmalloc.h
index 9ee77f6..d708a90 100644
--- a/src/xmalloc.h
+++ b/src/xmalloc.h
@@ -28,7 +28,7 @@
 #define lsx_Calloc(v,n)  v = lsx_calloc(n,sizeof(*(v)))
 #define lsx_strdup(p) ((p)? strcpy((char *)lsx_malloc(strlen(p) + 1), p) : NULL)
 #define lsx_memdup(p,s) ((p)? memcpy(lsx_malloc(s), p, s) : NULL)
-#define lsx_valloc(v,n)  v = lsx_malloc((n)*sizeof(*(v)))
-#define lsx_revalloc(v,n)  v = lsx_realloc(v, (n)*sizeof(*(v)))
+#define lsx_valloc(v,n)  v = lsx_realloc_array(NULL, n, sizeof(*(v)))
+#define lsx_revalloc(v,n)  v = lsx_realloc_array(v, n, sizeof(*(v)))
 
 #endif