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lightningd: fix clang 19 compile error.

Browse source 
```
Ubuntu clang version 19.1.0 (++20240901083933+6d7e428df611-1~exp1~20240901084058.28)
Target: x86_64-pc-linux-gnu
Thread model: posix
InstalledDir: /usr/lib/llvm-19/bin

./configure CC=clang-19
make -j17
<snip>
cc lightningd/offer.c
cc lightningd/signmessage.c
lightningd/subd.c:945:16: error: variable length array folded to constant array as an extension [-Werror,-Wgnu-folding-constant]
  945 |         char permfail[strlen("PERMFAIL")];
      |                       ^~~~~~~~~~~~~~~~~~
cc wallet/db.c
```

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Changelog-Fixed: build: fix overzealous warning from clang 19.
This commit is contained in:
Rusty Russell 2024-11-17 20:36:07 +10:30
parent 2dd0d4c88a
commit 80357911fb
1 changed files with 1 additions and 1 deletions
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2
lightningd/subd.c
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@ -944,7 +944,7 @@ char *opt_subd_dev_disconnect(const char *optarg, struct lightningd *ld)
/* If test specified that this disconnection should cause permanent failure */
bool dev_disconnect_permanent(struct lightningd *ld)
{
char permfail[strlen("PERMFAIL")];
char permfail[sizeof("PERMFAIL") - 1];
int r;
if (ld->dev_disconnect_fd == -1)