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Author: Nadiya Sitdykova
Description: allocate more memory so the heap block overrun wouldn't
happen (when qlen = 0). Issue was spotted by valgrind during
investigation of bug https://github.com/lh3/bwa/issues/108
This is a copy of the patch written for the bwa Debian package.
Last-Update: 2017-06-30
======================================================================
--- a/bwa-apache2/ksw.c
+++ b/bwa-apache2/ksw.c
@@ -385,7 +385,7 @@
assert(h0 > 0);
// allocate memory
qp = malloc(qlen * m);
- eh = calloc(qlen + 1, 8);
+ eh = calloc(qlen + 2, 8);
// generate the query profile
for (k = i = 0; k < m; ++k) {
const int8_t *p = &mat[k * m];
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