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gossipstore: fix uninitialized input fd

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Initialize infd to STDIN_FILENO if the input file argument is missing.

Caught with gcc version: 7.4.0

devtools/create-gossipstore.c: In function ‘main’:
devtools/create-gossipstore.c:130:9: error: ‘infd’ may be used
uninitialized in this function [-Werror=maybe-uninitialized]
  while (read_all(infd, &be_inlen, sizeof(be_inlen))) {

Suggested-by: @ZmnSCPxj <https://github.com/ElementsProject/lightning/pull/2674#issuecomment-495617253>
Signed-off-by: William Casarin <jb55@jb55.com>
This commit is contained in:
William Casarin
2019-05-24 02:57:30 -07:00
committed by Rusty Russell
parent 3f035cb3cc
commit 6f635b46fd
1 changed files with 2 additions and 0 deletions
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2
devtools/create-gossipstore.c
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@@ -115,6 +115,8 @@ int main(int argc, char *argv[])
if (infd < 0)
err(1, "opening %s", infile);
}
else
infd = STDIN_FILENO;
if (outfile) {
outfd = open(outfile, O_WRONLY|O_TRUNC|O_CREAT, 0666);