https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113291
Bug ID: 113291 Summary: [14 Regression] compilation never (?) finishes with recursive always_inline functions at -O and above Product: gcc Version: 14.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: ipa Assignee: unassigned at gcc dot gnu.org Reporter: zsojka at seznam dot cz CC: marxin at gcc dot gnu.org Target Milestone: --- Host: x86_64-pc-linux-gnu Target: x86_64-pc-linux-gnu Created attachment 57015 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=57015&action=edit reduced testcase Compiler output: $ time x86_64-pc-linux-gnu-gcc -O testcase.c -Wall -W testcase.c:13:1: warning: 'always_inline' function might not be inlinable [-Wattributes] 13 | f1 (void) | ^~ testcase.c:6:1: warning: 'always_inline' function might not be inlinable [-Wattributes] 6 | f0 (void) | ^~ testcase.c: In function 'f0': testcase.c:6:1: warning: infinite recursion detected [-Winfinite-recursion] In function 'f1', inlined from 'f0' at testcase.c:8:3: testcase.c:16:3: note: recursive call 16 | f0 (); | ^~~~~ testcase.c: In function 'f1': testcase.c:13:1: warning: infinite recursion detected [-Winfinite-recursion] 13 | f1 (void) | ^~ testcase.c:15:3: note: recursive call 15 | f1 (); | ^~~~~ ^C real 1m21.533s user 0m0.002s sys 0m0.000s $ 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-r14-7023-20240109134751-gab6224dfe12-checking-yes-rtl-df-extra-nobootstrap-amd64/bin/../libexec/gcc/x86_64-pc-linux-gnu/14.0.0/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-r14-7023-20240109134751-gab6224dfe12-checking-yes-rtl-df-extra-nobootstrap-amd64 Thread model: posix Supported LTO compression algorithms: zlib zstd gcc version 14.0.0 20240109 (experimental) (GCC)