diff options
Diffstat (limited to 'debian/patches/bypass_bigrecy_32bit.patch')
| -rw-r--r-- | debian/patches/bypass_bigrecy_32bit.patch | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/debian/patches/bypass_bigrecy_32bit.patch b/debian/patches/bypass_bigrecy_32bit.patch new file mode 100644 index 0000000..276bc8c --- /dev/null +++ b/debian/patches/bypass_bigrecy_32bit.patch @@ -0,0 +1,26 @@ +Description: Bypass bigrecy() optimization on 32-bit to fix test failure +Author: Bryan Newbold <bnewbold@robocracy.org> +Forwarded: yes +--- a/scl.c ++++ b/scl.c +@@ -132,12 +132,20 @@ void strrecy(str) + void bigrecy(bgnm) + SCM bgnm; + { ++/* As an emergency patch, only implement this GC optimization on specific ++ * 64-bit platforms. ++ * There is a "use-after-free" bug on 32-bit platforms, introduced as a ++ * regression between 5f1 and 5f2. --bnewbold (2017-09-30) ++ */ ++#if defined(__ia64__) || defined(__powerpc64__) || defined(__x86_64__) \ ++ || defined(__aarch64__) + if (IMP(bgnm) || !BIGP(bgnm)) return; + DEFER_INTS; + must_free(CHARS(bgnm), (sizet)NUMDIGS(bgnm)*sizeof(BIGDIG)); + CAR(bgnm) = INUM0; + CDR(bgnm) = INUM0; + ALLOW_INTS; ++#endif + } + + /* can convert to string accurately with bignums */ |