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ref: 12a2c9441eff63f8cd3db594b826305454736182
parent: 174fe185ec8b05a1dc6ce8c49ffc5a0aa1c81855
author: Simon Howard <fraggle@gmail.com>
date: Wed Apr 9 20:29:11 EDT 2014

midifile: Fix portability issue with malloc(0).

In the C standards, malloc(0) may return NULL without indicating a
failure to allocate. As values read from the MIDI file may be
arbitrary, add one to the allocated length so that we always allocated
a positive value. This fixes #165 (thanks nmain).

--- a/src/midifile.c

+++ b/src/midifile.c

@@ -176,9 +176,10 @@

     unsigned int i;

     byte *result;

-    // Allocate a buffer:

+    // Allocate a buffer. Allocate one extra byte, as malloc(0) is

+    // non-portable.

-    result = malloc(num_bytes);

+    result = malloc(num_bytes + 1);

     if (result == NULL)

     {