https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86287
Bug ID: 86287
Summary: AddressSanitizer: heap-use-after-free on bootstrap
with -O3
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: dcb314 at hotmail dot com
Target Milestone: ---
I have just tried to bootstrap trunk revision 261907 with address
sanitizer and got this:
==14968==ERROR: AddressSanitizer: heap-use-after-free on address 0x6110004afa94
at pc 0x00000295ba08 bp 0x7ffcee5bc280 sp 0x7ffcee5bc278
READ of size 4 at 0x6110004afa94 thread T0
#0 0x295ba07 in vect_transform_loop_stmt
../../trunk/gcc/tree-vect-loop.c:8332
#1 0x29a1ffc in vect_transform_loop(_loop_vec_info*)
../../trunk/gcc/tree-vect-loop.c:8567
#2 0x2a232dd in try_vectorize_loop_1 ../../trunk/gcc/tree-vectorizer.c:757
#3 0x2a26163 in try_vectorize_loop ../../trunk/gcc/tree-vectorizer.c:807
Configure line was
../trunk/configure --prefix=/home/dcb/gcc/results.261907.asan \
--with-build-config=bootstrap-asan \
--disable-multilib \
--disable-werror \
--enable-checking=df,extra,fold,rtl,yes \
--enable-languages=c,c++,fortran
with
sed 's/-O2/-O3 -funroll-loops -Wlogical-op/' < Makefile > Makefile.tmp
mv Makefile.tmp Makefile
This used to work at revision 261641, so it looks like
someone has broken something in the last few days.
