* [binutils-gdb] Avoid another -Werror=dangling-pointer
@ 2023-04-26 2:35 Alan Modra
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From: Alan Modra @ 2023-04-26 2:35 UTC (permalink / raw)
To: bfd-cvs
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=5b429b870767e2107bcc7d5d849e04d6901b5912
commit 5b429b870767e2107bcc7d5d849e04d6901b5912
Author: Alan Modra <amodra@gmail.com>
Date: Tue Apr 25 13:26:12 2023 +0930
Avoid another -Werror=dangling-pointer
write.c:415:7: error: dangling pointer ‘prev_frag’ to ‘dummy’ may be used
* write.c (chain_frchains_together_1): Rewrite loop as a do
while to avoid false positive -Wdangling-pointer.
Diff:
---
gas/write.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/gas/write.c b/gas/write.c
index 74a00ea97ae..573a667da22 100644
--- a/gas/write.c
+++ b/gas/write.c
@@ -380,7 +380,7 @@ chain_frchains_together_1 (segT section, struct frchain *frchp)
fragS dummy, *prev_frag = &dummy;
fixS fix_dummy, *prev_fix = &fix_dummy;
- for (; frchp; frchp = frchp->frch_next)
+ do
{
prev_frag->fr_next = frchp->frch_root;
prev_frag = frchp->frch_last;
@@ -393,7 +393,8 @@ chain_frchains_together_1 (segT section, struct frchain *frchp)
seg_info (section)->fix_tail = frchp->fix_tail;
prev_fix = frchp->fix_tail;
}
- }
+ frchp = frchp->frch_next;
+ } while (frchp);
gas_assert (prev_frag != &dummy
&& prev_frag->fr_type != 0);
prev_frag->fr_next = 0;
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