https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87715
Bug ID: 87715
Summary: problems with asan and -O3 build of ada
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: ada
Assignee: unassigned at gcc dot gnu.org
Reporter: dcb314 at hotmail dot com
Target Milestone: ---
I just tried to build the ada compiler with address sanitizer
and -O3 on recent gcc trunk.
Configure script is
../trunk/configure --prefix=/home/dcb/gcc/results.265434.asan \
--with-build-config=bootstrap-asan \
--disable-multilib \
--disable-werror \
--enable-checking=release \
--enable-languages=c,c++,fortran,ada
sed 's/-O2/-O3 -Wlogical-op/' < Makefile > Makefile.tmp
mv Makefile.tmp Makefile
I get error messages:
$ egrep "^Config|ERROR:" mk.out
...
Configuring stage 3 in ./libdecnumber
Configuring stage 3 in ./libcpp
Configuring stage 3 in ./gcc
=================================================================
==14774==ERROR: AddressSanitizer: dynamic-stack-buffer-overflow on address
0x7ffe9efa6587 at pc 0x000001cf4660 bp 0x7ffe9efa5e70 sp 0x7ffe9efa5e68
READ of size 1 at 0x7ffe9efa6587 thread T0
=================================================================
==14775==ERROR: AddressSanitizer: dynamic-stack-buffer-overflow on address
0x7ffde98d1027 at pc 0x000001cf4660 bp 0x7ffde98d0910 sp 0x7ffde98d0908
READ of size 1 at 0x7ffde98d1027 thread T0
=================================================================
==14779==ERROR: AddressSanitizer: dynamic-stack-buffer-overflow on address
0x7ffcb7f760a7 at pc 0x000001cf4660 bp 0x7ffcb7f75980 sp 0x7ffcb7f75978
READ of size 1 at 0x7ffcb7f760a7 thread T0
I suspect the -O3 might be causing a problem. I'll have another
go at building with -O2, not -O3.
