trungnt2910 wrote:

```
2026-05-18T12:31:18.8647366Z /__w/llvm-project/llvm-project/build/./bin/clang++ 
--target=aarch64-unknown-linux-gnu -DLIBC_NAMESPACE=__llvm_libc_common_utils 
-D_DEBUG -D_GLIBCXX_ASSERTIONS -D_GLIBCXX_NO_ASSERTIONS 
-D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS 
-I/__w/llvm-project/llvm-project/flang-rt/include 
-I/__w/llvm-project/llvm-project/flang-rt/../flang/include 
-I/__w/llvm-project/llvm-project/build/runtimes/runtimes-bins/flang-rt 
-I/__w/llvm-project/llvm-project/cmake/Modules/../../libc -fPIC 
-fno-semantic-interposition -fvisibility-inlines-hidden -Werror 
-Werror=date-time -Werror=unguarded-availability-new -Wall -Wextra 
-Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wmissing-field-initializers 
-Wimplicit-fallthrough -Wcovered-switch-default -Wno-noexcept-type 
-Wnon-virtual-dtor -Wdelete-non-virtual-dtor -Wsuggest-override 
-Wstring-conversion -Wno-pass-failed -Wmisleading-indentation 
-Wctad-maybe-unsupported -fdiagnostics-color -ffunction-sections 
-fdata-sections -Xclang -fno-pch-timestamp -O3 -DNDEBUG -std=gnu++17 -UNDEBUG 
-fno-lto -fno-exceptions -fno-rtti -funwind-tables 
-fno-asynchronous-unwind-tables 
-include/__w/llvm-project/llvm-project/flang-rt/lib/runtime/stl-overrides.h 
-Wp,-U_GLIBCXX_ASSERTIONS -Wp,-U_LIBCPP_ENABLE_ASSERTIONS -MD -MT 
flang-rt/lib/runtime/CMakeFiles/flang_rt.runtime.static.dir/exceptions.cpp.o 
-MF 
flang-rt/lib/runtime/CMakeFiles/flang_rt.runtime.static.dir/exceptions.cpp.o.d 
-o flang-rt/lib/runtime/CMakeFiles/flang_rt.runtime.static.dir/exceptions.cpp.o 
-c /__w/llvm-project/llvm-project/flang-rt/lib/runtime/exceptions.cpp
2026-05-18T12:31:18.8654222Z 
/__w/llvm-project/llvm-project/flang-rt/lib/runtime/exceptions.cpp:91:3: error: 
'feclearexcept' used without enabling floating-point exception behavior; use 
'pragma STDC FENV_ACCESS ON' or compile with '-ffp-exception-behavior=maytrap' 
[-Werror,-Wfenv-access]
2026-05-18T12:31:18.8655625Z    91 |   feclearexcept(excepts);
2026-05-18T12:31:18.8656641Z       |   ^~~~~~~~~~~~~~~~~~~~~~
2026-05-18T12:31:18.8657972Z 
/__w/llvm-project/llvm-project/flang-rt/lib/runtime/exceptions.cpp:98:3: error: 
'feraiseexcept' used without enabling floating-point exception behavior; use 
'pragma STDC FENV_ACCESS ON' or compile with '-ffp-exception-behavior=maytrap' 
[-Werror,-Wfenv-access]
2026-05-18T12:31:18.8658974Z    98 |   feraiseexcept(excepts);
2026-05-18T12:31:18.8659269Z       |   ^~~~~~~~~~~~~~~~~~~~~~
2026-05-18T12:31:18.8660226Z 
/__w/llvm-project/llvm-project/flang-rt/lib/runtime/exceptions.cpp:108:10: 
error: 'fetestexcept' used without enabling floating-point exception behavior; 
use 'pragma STDC FENV_ACCESS ON' or compile with 
'-ffp-exception-behavior=maytrap' [-Werror,-Wfenv-access]
2026-05-18T12:31:18.8661265Z   108 |   return fetestexcept(excepts);
2026-05-18T12:31:18.8661576Z       |          ^~~~~~~~~~~~~~~~~~~~~
2026-05-18T12:31:18.8661851Z 3 errors generated.
2026-05-18T12:31:19.1172350Z [2646/2783] Building CXX object 
flang-rt/lib/runtime/CMakeFiles/flang_rt.runtime.static.dir/__w/llvm-project/llvm-project/flang/lib/Decimal/binary-to-decimal.cpp.o
2026-05-18T12:31:19.1909178Z [2647/2783] Building CXX object 
flang-rt/lib/runtime/CMakeFiles/flang_rt.runtime.static.dir/descriptor.cpp.o
2026-05-18T12:31:19.2319083Z [2648/2783] Building CXX object 
flang-rt/lib/runtime/CMakeFiles/flang_rt.runtime.static.dir/edit-input.cpp.o
2026-05-18T12:31:19.2320958Z FAILED: 
flang-rt/lib/runtime/CMakeFiles/flang_rt.runtime.static.dir/edit-input.cpp.o 
2026-05-18T12:31:19.2326534Z /__w/llvm-project/llvm-project/build/./bin/clang++ 
--target=aarch64-unknown-linux-gnu -DLIBC_NAMESPACE=__llvm_libc_common_utils 
-D_DEBUG -D_GLIBCXX_ASSERTIONS -D_GLIBCXX_NO_ASSERTIONS 
-D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS 
-I/__w/llvm-project/llvm-project/flang-rt/include 
-I/__w/llvm-project/llvm-project/flang-rt/../flang/include 
-I/__w/llvm-project/llvm-project/build/runtimes/runtimes-bins/flang-rt 
-I/__w/llvm-project/llvm-project/cmake/Modules/../../libc -fPIC 
-fno-semantic-interposition -fvisibility-inlines-hidden -Werror 
-Werror=date-time -Werror=unguarded-availability-new -Wall -Wextra 
-Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wmissing-field-initializers 
-Wimplicit-fallthrough -Wcovered-switch-default -Wno-noexcept-type 
-Wnon-virtual-dtor -Wdelete-non-virtual-dtor -Wsuggest-override 
-Wstring-conversion -Wno-pass-failed -Wmisleading-indentation 
-Wctad-maybe-unsupported -fdiagnostics-color -ffunction-sections 
-fdata-sections -Xclang -fno-pch-timestamp -O3 -DNDEBUG -std=gnu++17 -UNDEBUG 
-fno-lto -fno-exceptions -fno-rtti -funwind-tables 
-fno-asynchronous-unwind-tables 
-include/__w/llvm-project/llvm-project/flang-rt/lib/runtime/stl-overrides.h 
-Wp,-U_GLIBCXX_ASSERTIONS -Wp,-U_LIBCPP_ENABLE_ASSERTIONS -MD -MT 
flang-rt/lib/runtime/CMakeFiles/flang_rt.runtime.static.dir/edit-input.cpp.o 
-MF 
flang-rt/lib/runtime/CMakeFiles/flang_rt.runtime.static.dir/edit-input.cpp.o.d 
-o flang-rt/lib/runtime/CMakeFiles/flang_rt.runtime.static.dir/edit-input.cpp.o 
-c /__w/llvm-project/llvm-project/flang-rt/lib/runtime/edit-input.cpp
2026-05-18T12:31:19.2332770Z 
/__w/llvm-project/llvm-project/flang-rt/lib/runtime/edit-input.cpp:580:5: 
error: 'feraiseexcept' used without enabling floating-point exception behavior; 
use 'pragma STDC FENV_ACCESS ON' or compile with 
'-ffp-exception-behavior=maytrap' [-Werror,-Wfenv-access]
2026-05-18T12:31:19.2333731Z   580 |     RAISE(FE_OVERFLOW);
2026-05-18T12:31:19.2334011Z       |     ^~~~~~~~~~~~~~~~~~
2026-05-18T12:31:19.2334510Z 
/__w/llvm-project/llvm-project/flang-rt/lib/runtime/edit-input.cpp:572:15: 
note: expanded from macro 'RAISE'
2026-05-18T12:31:19.2335065Z   572 | #define RAISE std::feraiseexcept
2026-05-18T12:31:19.2335363Z       |               ^
2026-05-18T12:31:19.2336483Z 
/__w/llvm-project/llvm-project/flang-rt/lib/runtime/edit-input.cpp:585:5: 
error: 'feraiseexcept' used without enabling floating-point exception behavior; 
use 'pragma STDC FENV_ACCESS ON' or compile with 
'-ffp-exception-behavior=maytrap' [-Werror,-Wfenv-access]
2026-05-18T12:31:19.2337474Z   585 |     RAISE(FE_UNDERFLOW);
2026-05-18T12:31:19.2337796Z       |     ^~~~~~~~~~~~~~~~~~~
2026-05-18T12:31:19.2338261Z 
/__w/llvm-project/llvm-project/flang-rt/lib/runtime/edit-input.cpp:572:15: 
note: expanded from macro 'RAISE'
2026-05-18T12:31:19.2338770Z   572 | #define RAISE std::feraiseexcept
2026-05-18T12:31:19.2339057Z       |               ^
2026-05-18T12:31:19.2339933Z 
/__w/llvm-project/llvm-project/flang-rt/lib/runtime/edit-input.cpp:590:5: 
error: 'feraiseexcept' used without enabling floating-point exception behavior; 
use 'pragma STDC FENV_ACCESS ON' or compile with 
'-ffp-exception-behavior=maytrap' [-Werror,-Wfenv-access]
2026-05-18T12:31:19.2340885Z   590 |     RAISE(FE_INEXACT);
2026-05-18T12:31:19.2341148Z       |     ^~~~~~~~~~~~~~~~~
2026-05-18T12:31:19.2341670Z 
/__w/llvm-project/llvm-project/flang-rt/lib/runtime/edit-input.cpp:572:15: 
note: expanded from macro 'RAISE'
2026-05-18T12:31:19.2342180Z   572 | #define RAISE std::feraiseexcept
2026-05-18T12:31:19.2342477Z       |               ^
2026-05-18T12:31:19.2343396Z 
/__w/llvm-project/llvm-project/flang-rt/lib/runtime/edit-input.cpp:595:5: 
error: 'feraiseexcept' used without enabling floating-point exception behavior; 
use 'pragma STDC FENV_ACCESS ON' or compile with 
'-ffp-exception-behavior=maytrap' [-Werror,-Wfenv-access]
2026-05-18T12:31:19.2344312Z   595 |     RAISE(FE_INVALID);
2026-05-18T12:31:19.2344579Z       |     ^~~~~~~~~~~~~~~~~
2026-05-18T12:31:19.2345028Z 
/__w/llvm-project/llvm-project/flang-rt/lib/runtime/edit-input.cpp:572:15: 
note: expanded from macro 'RAISE'
2026-05-18T12:31:19.2345572Z   572 | #define RAISE std::feraiseexcept
2026-05-18T12:31:19.2345849Z       |               ^
2026-05-18T12:31:19.2346174Z 4 errors generated.
```

This is clearly not my fault. Last month, running from the same merge base did 
not fail.
Will wait for a while before rebasing.

https://github.com/llvm/llvm-project/pull/184953
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