diff options
| author | Father Chrysostomos <sprout@cpan.org> | 2013-08-24 18:02:09 -0700 |
|---|---|---|
| committer | Father Chrysostomos <sprout@cpan.org> | 2013-08-25 06:39:28 -0700 |
| commit | e8eb279cb8d8b30256eb8b1957e1dabed28fc4eb (patch) | |
| tree | 4ecc06a52d1ab4fb015da2e28803da335120ab95 /embed.h | |
| parent | e94bb4701fe9ef6ea7467f3fbc456bd68d184ef0 (diff) | |
| download | perl-e8eb279cb8d8b30256eb8b1957e1dabed28fc4eb.tar.gz | |
Use SSize_t for tmps stack offsets
This is a partial fix for #119161.
On 64-bit platforms, I32 is too small to hold offsets into a stack
that can grow larger than I32_MAX. What happens is the offsets can
wrap so we end up referencing and modifying elements with negative
indices, corrupting memory, and causing crashes.
With this commit, ()=1..1000000000000 stops crashing immediately.
Instead, it gobbles up all your memory first, and then, if your com-
puter still survives, crashes. The second crash happesn bcause of
a similar bug with the argument stack, which the next commit will
take care of.
Diffstat (limited to 'embed.h')
| -rw-r--r-- | embed.h | 1 |
1 files changed, 1 insertions, 0 deletions
@@ -1217,6 +1217,7 @@ #define rsignal_restore(a,b) Perl_rsignal_restore(aTHX_ a,b) #define rsignal_save(a,b,c) Perl_rsignal_save(aTHX_ a,b,c) #define rxres_save(a,b) Perl_rxres_save(aTHX_ a,b) +#define save_strlen(a) Perl_save_strlen(aTHX_ a) #define sawparens(a) Perl_sawparens(aTHX_ a) #define scalar(a) Perl_scalar(aTHX_ a) #define scalarvoid(a) Perl_scalarvoid(aTHX_ a) |