https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107169
Bug ID: 107169
Summary: [13 Regression] -fcompare-debug failure at -O and
above
Product: gcc
Version: 13.0
Status: UNCONFIRMED
Keywords: compare-debug-failure
Severity: normal
Priority: P3
Component: debug
Assignee: unassigned at gcc dot gnu.org
Reporter: zsojka at seznam dot cz
CC: aoliva at gcc dot gnu.org
Target Milestone: ---
Host: x86_64-pc-linux-gnu
Created attachment 53671
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=53671&action=edit
reduced testcase
Compiler output:
$ x86_64-pc-linux-gnu-gcc -O -fcompare-debug testcase.C
x86_64-pc-linux-gnu-gcc: error: testcase.C: '-fcompare-debug' failure
$ diff -u a-testcase*.C.gkd
--- a-testcase.C.gkd 2022-10-06 13:22:34.389297164 +0200
+++ a-testcase.gk.C.gkd 2022-10-06 13:22:34.419297164 +0200
@@ -66,7 +66,7 @@
-> 6)
(note # 0 0 [bb 3] NOTE_INSN_BASIC_BLOCK)
(insn # 0 0 3 (set (mem/f/c:DI (symbol_ref:DI ("_class") [flags 0x2]
<var_decl # _class>) [ _class+0 S8 A64])
- (const_int 0 [0])) "testcase.C":170:31 discrim 2# {*movdi_internal}
+ (const_int 0 [0])) "testcase.C":170:31 discrim 3# {*movdi_internal}
(nil))
(code_label # 0 0 4 6 (nil) [1 uses])
(note # 0 0 [bb 4] NOTE_INSN_BASIC_BLOCK)
$ x86_64-pc-linux-gnu-gcc -v
Using built-in specs.
COLLECT_GCC=/repo/gcc-trunk/binary-latest-amd64/bin/x86_64-pc-linux-gnu-gcc
COLLECT_LTO_WRAPPER=/repo/gcc-trunk/binary-trunk-r13-3128-20221006123905-gdb2f5d66123-checking-yes-rtl-df-extra-nobootstrap-amd64/bin/../libexec/gcc/x86_64-pc-linux-gnu/13.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: /repo/gcc-trunk//configure --enable-languages=c,c++
--enable-valgrind-annotations --disable-nls --enable-checking=yes,rtl,df,extra
--disable-bootstrap --with-cloog --with-ppl --with-isl
--build=x86_64-pc-linux-gnu --host=x86_64-pc-linux-gnu
--target=x86_64-pc-linux-gnu --with-ld=/usr/bin/x86_64-pc-linux-gnu-ld
--with-as=/usr/bin/x86_64-pc-linux-gnu-as --disable-libstdcxx-pch
--prefix=/repo/gcc-trunk//binary-trunk-r13-3128-20221006123905-gdb2f5d66123-checking-yes-rtl-df-extra-nobootstrap-amd64
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 13.0.0 20221006 (experimental) (GCC)