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| author | Christopher Faylor <me@cgf.cx> | 2002-06-26 05:37:29 +0000 |
|---|---|---|
| committer | Christopher Faylor <me@cgf.cx> | 2002-06-26 05:37:29 +0000 |
| commit | 8698edb8ae42650a5222a2209b23ad513834b5e5 (patch) | |
| tree | a9b8583498d582a7e23a342684afa436218d7417 /winsup/cygwin/dcrt0.cc | |
| parent | f279e522b05950655c6b4699ecd7a7f115261bc8 (diff) | |
| download | cygnal-8698edb8ae42650a5222a2209b23ad513834b5e5.tar.gz cygnal-8698edb8ae42650a5222a2209b23ad513834b5e5.tar.bz2 cygnal-8698edb8ae42650a5222a2209b23ad513834b5e5.zip | |
* dcrt0.cc (_dcrt0): Be more defensive when reserved block is used and it's not
cygwin info.
Diffstat (limited to 'winsup/cygwin/dcrt0.cc')
| -rw-r--r-- | winsup/cygwin/dcrt0.cc | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/winsup/cygwin/dcrt0.cc b/winsup/cygwin/dcrt0.cc index f5fef08aa..da2865112 100644 --- a/winsup/cygwin/dcrt0.cc +++ b/winsup/cygwin/dcrt0.cc @@ -821,8 +821,10 @@ _dll_crt0 () GetStartupInfo (&si); child_proc_info = (child_info *) si.lpReserved2; - if (si.cbReserved2 >= EXEC_MAGIC_SIZE && - memcmp (child_proc_info->zero, zeros, sizeof (zeros)) == 0) + if (si.cbReserved2 < EXEC_MAGIC_SIZE || !child_proc_info + || 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) multiple_cygwin_problem ("proc", child_proc_info->intro, 0); |