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io/gzio: Fix possible use of uninitialized variable in huft_build()

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In huft_build() it is possible to reach the for loop where "r" is being
assigned to "q[j]" without "r.v" ever being initialized.

Fixes: CID 314024

Signed-off-by: Darren Kenny <darren.kenny@oracle.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
This commit is contained in:
Darren Kenny 2021-10-26 15:02:40 +00:00 committed by Daniel Kiper
parent bb9ff31641
commit 29d44a236a
1 changed files with 1 additions and 1 deletions
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grub-core/io/gzio.c
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@ -447,7 +447,7 @@ huft_build (unsigned *b, /* code lengths in bits (all assumed <= BMAX) */
int l; /* bits per table (returned in m) */
register unsigned *p; /* pointer into c[], b[], or v[] */
register struct huft *q; /* points to current table */
struct huft r; /* table entry for structure assignment */
struct huft r = {0}; /* table entry for structure assignment */
struct huft *u[BMAX]; /* table stack */
unsigned v[N_MAX]; /* values in order of bit length */
register int w; /* bits before this table == (l * h) */