driver.cpp:(.text.startup.main+0x890): relocation truncated to fit: R_AARCH64_CALL26 against symbol `__aarch64_ldadd4_acq_rel' defined in .text section in /usr/lib/gcc/aarch64-linux-gnu/15/libgcc.a(ldadd_4_4.o)

full log:
https://llvm-jenkins.debian.net/job/llvm-toolchain-questing-binaries/architecture=arm64,distribution=questing,label=arm64/416/

```
/usr/lib/aarch64-linux-gnu/libzstd.so: warning: GCS is required by -z gcs, but this shared library lacks the necessary property note. The dynamic loader might not enable GCS or refuse to load the program unless all the shared library dependencies have the GCS marking.
tools/flang/tools/flang-driver/CMakeFiles/flang.dir/driver.cpp.o: in function `main':
driver.cpp:(.text.startup.main+0x890): relocation truncated to fit: R_AARCH64_CALL26 against symbol `__aarch64_ldadd4_acq_rel' defined in .text section in /usr/lib/gcc/aarch64-linux-gnu/15/libgcc.a(ldadd_4_4.o)
lib/libPolly.a(ScopDetection.cpp.o): in function `__static_initialization_and_destruction_0()':
ScopDetection.cpp:(.text.startup._Z41__static_initialization_and_destruction_0v+0xf44): relocation truncated to fit: R_AARCH64_CALL26 against symbol `llvm::getNextAvailablePluginDiagnosticKind()' defined in .text._ZN4llvm36getNextAvailablePluginDiagnosticKindEv section in lib/libLLVMCore.a(DiagnosticInfo.cpp.o)
lib/libLLVMTransformUtils.a(Debugify.cpp.o): in function `__static_initialization_and_destruction_0()':
Debugify.cpp:(.text.startup._Z41__static_initialization_and_destruction_0v+0x5f0): relocation truncated to fit: R_AARCH64_CALL26 against symbol `llvm::PassRegistry::getPassRegistry()' defined in .text._ZN4llvm12PassRegistry15getPassRegistryEv section in lib/libLLVMCore.a(PassRegistry.cpp.o)
Debugify.cpp:(.text.startup._Z41__static_initialization_and_destruction_0v+0x604): relocation truncated to fit: R_AARCH64_CALL26 against symbol `llvm::PassRegistry::registerPass(llvm::PassInfo const&, bool)' defined in .text._ZN4llvm12PassRegistry12registerPassERKNS_8PassInfoEb section in lib/libLLVMCore.a(PassRegistry.cpp.o)
Debugify.cpp:(.text.startup._Z41__static_initialization_and_destruction_0v+0x640): relocation truncated to fit: R_AARCH64_CALL26 against symbol `llvm::PassRegistry::getPassRegistry()' defined in .text._ZN4llvm12PassRegistry15getPassRegistryEv section in lib/libLLVMCore.a(PassRegistry.cpp.o)
Debugify.cpp:(.text.startup._Z41__static_initialization_and_destruction_0v+0x654): relocation truncated to fit: R_AARCH64_CALL26 against symbol `llvm::PassRegistry::registerPass(llvm::PassInfo const&, bool)' defined in .text._ZN4llvm12PassRegistry12registerPassERKNS_8PassInfoEb section in lib/libLLVMCore.a(PassRegistry.cpp.o)
Debugify.cpp:(.text.startup._Z41__static_initialization_and_destruction_0v+0x690): relocation truncated to fit: R_AARCH64_CALL26 against symbol `llvm::PassRegistry::getPassRegistry()' defined in .text._ZN4llvm12PassRegistry15getPassRegistryEv section in lib/libLLVMCore.a(PassRegistry.cpp.o)
Debugify.cpp:(.text.startup._Z41__static_initialization_and_destruction_0v+0x6a4): relocation truncated to fit: R_AARCH64_CALL26 against symbol `llvm::PassRegistry::registerPass(llvm::PassInfo const&, bool)' defined in .text._ZN4llvm12PassRegistry12registerPassERKNS_8PassInfoEb section in lib/libLLVMCore.a(PassRegistry.cpp.o)
Debugify.cpp:(.text.startup._Z41__static_initialization_and_destruction_0v+0x6e4): relocation truncated to fit: R_AARCH64_CALL26 against symbol `llvm::PassRegistry::getPassRegistry()' defined in .text._ZN4llvm12PassRegistry15getPassRegistryEv section in lib/libLLVMCore.a(PassRegistry.cpp.o)
Debugify.cpp:(.text.startup._Z41__static_initialization_and_destruction_0v+0x72c): relocation truncated to fit: R_AARCH64_JUMP26 against symbol `llvm::PassRegistry::registerPass(llvm::PassInfo const&, bool)' defined in .text._ZN4llvm12PassRegistry12registerPassERKNS_8PassInfoEb section in lib/libLLVMCore.a(PassRegistry.cpp.o)
collect2: error: ld returned 1 exit status
ninja: build stopped: subcommand failed.

```

it has been failing for a few days at least

ubuntu arm64 questing

Start with the linked Jenkins log and the failing arm64 Questing build, then inspect tools/flang/tools/flang-driver/driver.cpp and the reported ScopDetection.cpp and Debugify.cpp link failures. Reproduce the Ninja build and trace the R_AARCH64_CALL26/JUMP26 errors; done means the arm64 build completes without these relocation failures.

Written by the indexing model from the issue text.