---
src/adpcm.c | 12 +++++++++++-
1 file changed, 11 insertions(+), 1 deletion(-)
diff --git a/src/adpcm.c b/src/adpcm.c
index 2e13867e..b400eb95 100644
--- a/src/adpcm.c
+++ b/src/adpcm.c
@@ -113,7 +113,13 @@ const char *lsx_ms_adpcm_block_expand_i(
const unsigned char *ip;
unsigned ch;
const char *errmsg = NULL;
- MsState_t state[4]; /* One decompressor state for each channel */
+
+ /* One decompressor state for each channel */
+ MsState_t *state;
+ size_t size = sizeof(*state) * chans;
+ const size_t alloca_max = 1024;
+
+ state = size > alloca_max ? lsx_malloc(size) : alloca(size);
/* Read the four-byte header for each channel */
ip = ibuff;
@@ -158,6 +164,10 @@ const char *lsx_ms_adpcm_block_expand_i(
if (++ch2 == chans) ch2 = 0;
}
}
+
+ if (size > alloca_max)
+ free(state);
+
return errmsg;
}
--
EW
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