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PR24402, global buffer overflow in symtab_finalize

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PR 24402
	* symtab.c (symtab_finalize): Init prev_addr to one less than
	first symbol address, not one more.  Correct test for symbols
	with leading underscores.
This commit is contained in:
Alan Modra 2019-04-01 12:00:09 +10:30
parent 91fc2ba707
commit f7043f6281
2 changed files with 9 additions and 2 deletions
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7
gprof/ChangeLog
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@ -1,3 +1,10 @@
2019-04-01 Alan Modra <amodra@gmail.com>
PR 24402
* symtab.c (symtab_finalize): Init prev_addr to one less than
first symbol address, not one more. Correct test for symbols
with leading underscores.
2019-01-21 Nick Clifton <nickc@redhat.com>
* po/tr.po: Updated Turkish translation.

4
gprof/symtab.c
View File

@ -89,7 +89,7 @@ symtab_finalize (Sym_Table *tab)
/* Remove duplicate entries to speed-up later processing and
set end_addr if its not set yet. */
prev_addr = tab->base[0].addr + 1;
prev_addr = tab->base[0].addr - 1;
for (src = dst = tab->base; src < tab->limit; ++src)
{
@ -107,7 +107,7 @@ symtab_finalize (Sym_Table *tab)
&& ((src->is_func && !dst[-1].is_func)
|| ((src->is_func == dst[-1].is_func)
&& ((src->name[0] != '_' && dst[-1].name[0] == '_')
|| (src->name[0]
|| (src->name[0] == '_' && dst[-1].name[0] == '_'
&& src->name[1] != '_'
&& dst[-1].name[1] == '_'))))))
{