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unwind-dw2-fde-glibc.c (_Unwind_IteratePhdrCallback): Guard against prev_cache_entry == NULL when moving a cache entry to the head of... 

2005-12-15  Andrew Haley  <aph@redhat.com>

        * unwind-dw2-fde-glibc.c (_Unwind_IteratePhdrCallback): Guard
        against prev_cache_entry == NULL when moving a cache entry to the
        head of the list.

From-SVN: r108582
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Andrew Haley 2005-12-15 16:17:50 +00:00 committed by Andrew Haley
parent 6c9ac67a41
commit a8acd1c480
2 changed files with 10 additions and 1 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2005-12-15 Andrew Haley <aph@redhat.com>
* unwind-dw2-fde-glibc.c (_Unwind_IteratePhdrCallback): Guard
against prev_cache_entry == NULL when moving a cache entry to the
head of the list.
2005-12-15 Nathan Sidwell <nathan@codesourcery.com>
* config/mt/mt.c (mt_override_options): Require lower case

5
gcc/unwind-dw2-fde-glibc.c
View File

@ -257,7 +257,10 @@ _Unwind_IteratePhdrCallback (struct dl_phdr_info *info, size_t size, void *ptr)
if (size >= sizeof (struct ext_dl_phdr_info))
{
if (last_cache_entry != NULL)
/* Move the cache entry we're about to overwrite to the head of
the list. If either last_cache_entry or prev_cache_entry are
NULL, that cache entry is already at the head. */
if (last_cache_entry != NULL && prev_cache_entry != NULL)
{
prev_cache_entry->link = last_cache_entry->link;
last_cache_entry->link = frame_hdr_cache_head;