The branch main has been updated by siva:

URL: 
https://cgit.FreeBSD.org/src/commit/?id=0e3dae1ca8fc371eb5c451032adc5e0813b00db6

commit 0e3dae1ca8fc371eb5c451032adc5e0813b00db6
Author:     Siva Mahadevan <[email protected]>
AuthorDate: 2026-09-08 20:10:51 +0000
Commit:     Siva Mahadevan <[email protected]>
CommitDate: 2026-09-09 13:47:39 +0000

    tests/fusefs: fix the build with gcc 16
    
    Reviewed by:    asomers
    MFC after:      3 days
    Sponsored by:   The FreeBSD Foundation
---
 tests/sys/fs/fusefs/Makefile | 7 +++++++
 tests/sys/fs/fusefs/utils.cc | 2 +-
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/tests/sys/fs/fusefs/Makefile b/tests/sys/fs/fusefs/Makefile
index 4ba477450c0a..9d63164db03b 100644
--- a/tests/sys/fs/fusefs/Makefile
+++ b/tests/sys/fs/fusefs/Makefile
@@ -99,6 +99,13 @@ CXXWARNFLAGS+=       -Wno-vla-cxx-extension
 CXXFLAGS+=     -I${SRCTOP}/tests
 CXXFLAGS+=     -I${FUSEFS}
 
+.if ${COMPILER_TYPE} == "gcc" && ${COMPILER_VERSION} >= 160000
+# gcc 16's aggressive inlining hits max-inline-insns-* limits and
+# fails on these sources. Use a lower optimization setting to
+# fix the build.
+CXXFLAGS+= -O1
+.endif
+
 LIBADD+=       pthread
 LIBADD+=       gmock gtest
 LIBADD+=       util
diff --git a/tests/sys/fs/fusefs/utils.cc b/tests/sys/fs/fusefs/utils.cc
index 3471032b99a1..eece4ae100cf 100644
--- a/tests/sys/fs/fusefs/utils.cc
+++ b/tests/sys/fs/fusefs/utils.cc
@@ -182,7 +182,7 @@ void FuseTest::SetUp() {
                        _)
                ).Times(AnyNumber())
                .WillRepeatedly(Invoke(ReturnErrno(ENOSYS)));
-       } catch (std::system_error err) {
+       } catch (std::system_error const& err) {
                FAIL() << err.what();
        }
 }

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