From fc41b0610e5bb204dd9905f89e235ea801e7a4ea Mon Sep 17 00:00:00 2001
From: Andreas Schwab
Date: Tue, 9 Jul 2019 21:12:14 +0200
Subject: Make fingerprint handling compatible with LTO

Tell the compiler that the fingerprint variable is modified unpredictably.

* lib/fingerprint.h (fingerprint): Remove const.
* lib/fingerprint.c (fingerprint): Likewise.
* src/pdumper.c (Fdump_emacs_portable): Cast fingerprint variable.
(pdumper_load): Likewise.
* lib-src/make-fingerprint.c (main): Likewise.
---
 src/pdumper.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

(limited to 'src')

diff --git a/src/pdumper.c b/src/pdumper.c
index 8b630d221b1..7d29d3c0c83 100644
--- a/src/pdumper.c
+++ b/src/pdumper.c
@@ -4101,7 +4101,8 @@ types.  */)
   ctx->header.magic[0] = '!'; /* Note that dump is incomplete.  */
 
   verify (sizeof (fingerprint) == sizeof (ctx->header.fingerprint));
-  memcpy (ctx->header.fingerprint, fingerprint, sizeof (fingerprint));
+  memcpy (ctx->header.fingerprint, (unsigned char *) fingerprint,
+	  sizeof (fingerprint));
 
   const dump_off header_start = ctx->offset;
   dump_fingerprint ("dumping fingerprint", ctx->header.fingerprint);
@@ -5359,9 +5360,10 @@ pdumper_load (const char *dump_filename)
 
   err = PDUMPER_LOAD_VERSION_MISMATCH;
   verify (sizeof (header->fingerprint) == sizeof (fingerprint));
-  if (memcmp (header->fingerprint, fingerprint, sizeof (fingerprint)) != 0)
+  if (memcmp (header->fingerprint, (unsigned char *) fingerprint,
+	      sizeof (fingerprint)) != 0)
     {
-      dump_fingerprint ("desired fingerprint", fingerprint);
+      dump_fingerprint ("desired fingerprint", (unsigned char *) fingerprint);
       dump_fingerprint ("found fingerprint", header->fingerprint);
       goto out;
     }
-- 
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