https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113546
Bug ID: 113546
Summary: aarch64: bootstrap-debug-lean broken with
-fcompare-debug failure
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: rtl-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: acoplan at gcc dot gnu.org
Target Milestone: ---
I tried a bootstrap --with-build-config=bootstrap-debug-lean on aarch64 and it
failed with an -fcompare-debug failure building libiberty/regex.c:
make[3]: Entering directory '/data/ajc/toolchain/builds/bstrap-lean/libiberty'
if [ x"-fPIC" != x ]; then \
/home/alecop01/toolchain/builds/bstrap-lean/./prev-gcc/xgcc
-B/home/alecop01/toolchain/builds/bstrap-lean/./prev-gcc/
-B/home/alecop01/toolchain/builds/bstrap-lean/aarch64-unknown-linux-gnu/bin/
-B/home/alecop01/toolchain/builds/bstrap-lean/aarch64-unknown-linux-gnu/bin/
-B/home/alecop01/toolchain/builds/bstrap-lean/aarch64-unknown-linux-gnu/lib/
-isystem
/home/alecop01/toolchain/builds/bstrap-lean/aarch64-unknown-linux-gnu/include
-isystem
/home/alecop01/toolchain/builds/bstrap-lean/aarch64-unknown-linux-gnu/sys-include
-fchecking=1 -c -DHAVE_CONFIG_H -g -O2 -fchecking=1 -fcompare-debug -I.
-I/home/alecop01/toolchain/src/gcc/libiberty/../include -W -Wall
-Wwrite-strings -Wc++-compat -Wstrict-prototypes -Wshadow=local -pedantic
-D_GNU_SOURCE -fPIC /home/alecop01/toolchain/src/gcc/libiberty/regex.c -o
pic/regex.o; \
else true; fi
xgcc: error: /home/alecop01/toolchain/src/gcc/libiberty/regex.c:
‘-fcompare-debug’ failure
Makefile:1219: recipe for target 'regex.o' failed
make[3]: *** [regex.o] Error 1
make[3]: Leaving directory '/data/ajc/toolchain/builds/bstrap-lean/libiberty'
Makefile:11725: recipe for target 'all-stage3-libiberty' failed
make[2]: *** [all-stage3-libiberty] Error 2
make[2]: Leaving directory '/data/ajc/toolchain/builds/bstrap-lean'
Makefile:26292: recipe for target 'stage3-bubble' failed
make[1]: *** [stage3-bubble] Error 2
make[1]: Leaving directory '/data/ajc/toolchain/builds/bstrap-lean'
Makefile:1099: recipe for target 'all' failed
make: *** [all] Error 2
Here is a reduced testcase for that:
$ cat t.c
int x;
void f() {
fail:
switch (x) { case 0: goto fail;; }
}
$ ./xgcc -B . -c t.c -fcompare-debug -O -S -o /dev/null
xgcc: error: t.c: ‘-fcompare-debug’ failure
