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* dcrt0.cc (_dcrt0): Be more defensive when reserved block is used and it's not 

cygwin info.
This commit is contained in:
Christopher Faylor 2002-06-26 05:37:29 +00:00
parent f279e522b0
commit 8698edb8ae
2 changed files with 9 additions and 2 deletions
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5
winsup/cygwin/ChangeLog
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@ -1,3 +1,8 @@
2002-06-26 Christopher Faylor <cgf@redhat.com>
* dcrt0.cc (_dcrt0): Be more defensive when reserved block is used and
it's not cygwin info.
2002-06-26 Christopher Faylor <cgf@redhat.com> 2002-06-26 Christopher Faylor <cgf@redhat.com>
* autoload (noload): Avoid clobbering bx register. * autoload (noload): Avoid clobbering bx register.

6
winsup/cygwin/dcrt0.cc
View File

@ -821,8 +821,10 @@ _dll_crt0 ()
GetStartupInfo (&si); GetStartupInfo (&si);
child_proc_info = (child_info *) si.lpReserved2; child_proc_info = (child_info *) si.lpReserved2;
if (si.cbReserved2 >= EXEC_MAGIC_SIZE && if (si.cbReserved2 < EXEC_MAGIC_SIZE || !child_proc_info
memcmp (child_proc_info->zero, zeros, sizeof (zeros)) == 0) || memcmp (child_proc_info->zero, zeros, sizeof (zeros)) != 0)
child_proc_info = NULL;
else
{ {
if ((child_proc_info->intro & OPROC_MAGIC_MASK) == OPROC_MAGIC_GENERIC) if ((child_proc_info->intro & OPROC_MAGIC_MASK) == OPROC_MAGIC_GENERIC)
multiple_cygwin_problem ("proc", child_proc_info->intro, 0); multiple_cygwin_problem ("proc", child_proc_info->intro, 0);