ebb0a21099
Update this diagnostic to mention the reason (unmatched '['), matching the other diagnostic about stray '\'. The original pattern is omitted, as some users may mention the original pattern in another position, not repeating it.
109 lines
6.4 KiB
ArmAsm
109 lines
6.4 KiB
ArmAsm
# REQUIRES: x86
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# RUN: llvm-mc -filetype=obj -triple=x86_64 %s -o %t1.o
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# RUN: echo '.globl foo; foo:' | llvm-mc -filetype=obj -triple=x86_64 - -o %t2.o
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# RUN: rm -f %t2.a
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# RUN: llvm-ar rcs %t2.a %t2.o
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# RUN: ld.lld -shared %t2.o -o %t2.so
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## A forward reference is accepted by a traditional Unix linker.
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# RUN: ld.lld --fatal-warnings %t1.o %t2.a -o /dev/null
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# RUN: ld.lld --fatal-warnings --warn-backrefs %t1.o %t2.a -o /dev/null
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# RUN: ld.lld --fatal-warnings --warn-backrefs %t1.o --start-lib %t2.o --end-lib -o /dev/null
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# RUN: echo 'INPUT("%t1.o" "%t2.a")' > %t1.lds
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# RUN: ld.lld --fatal-warnings --warn-backrefs %t1.lds -o /dev/null
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## A backward reference from %t1.o to %t2.a
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## Warn unless the archive is excluded by --warn-backrefs-exclude
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# RUN: ld.lld --fatal-warnings %t2.a %t1.o -o /dev/null
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# RUN: ld.lld --warn-backrefs %t2.a %t1.o -o /dev/null 2>&1 | FileCheck %s
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# RUN: ld.lld --warn-backrefs --no-warn-backrefs %t2.a %t1.o -o /dev/null 2>&1 | count 0
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# RUN: ld.lld --warn-backrefs %t2.a '-(' %t1.o '-)' -o /dev/null 2>&1 | FileCheck %s
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# RUN: ld.lld --warn-backrefs --warn-backrefs-exclude='*3.a' %t2.a %t1.o -o /dev/null 2>&1 | FileCheck %s
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# RUN: ld.lld --fatal-warnings --warn-backrefs --warn-backrefs-exclude='*2.a(*2.o)' %t2.a %t1.o -o /dev/null
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# RUN: ld.lld --fatal-warnings --warn-backrefs --warn-backrefs-exclude '*2.a(*2.o)' \
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# RUN: --warn-backrefs-exclude not_exist %t2.a %t1.o -o /dev/null
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## Without --warn-backrefs, --warn-backrefs-exclude is ignored.
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# RUN: ld.lld --fatal-warnings --warn-backrefs-exclude=not_exist %t2.a %t1.o -o /dev/null
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## Placing the definition and the backward reference in a group can suppress the warning.
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# RUN: echo 'GROUP("%t2.a" "%t1.o")' > %t2.lds
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# RUN: ld.lld --fatal-warnings --warn-backrefs %t2.lds -o /dev/null
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# RUN: ld.lld --fatal-warnings --warn-backrefs '-(' %t2.a %t1.o '-)' -o /dev/null
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# RUN: ld.lld --fatal-warnings --warn-backrefs --start-group %t2.a %t1.o --end-group -o /dev/null
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## A backward reference from %t1.o to %t2.a (added by %t3.lds).
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# RUN: echo 'GROUP("%t2.a")' > %t3.lds
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# RUN: ld.lld --warn-backrefs %t3.lds %t1.o -o /dev/null 2>&1 | FileCheck %s
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# RUN: ld.lld --fatal-warnings --warn-backrefs '-(' %t3.lds %t1.o '-)' -o /dev/null
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# RUN: ld.lld --fatal-warnings --warn-backrefs --warn-backrefs-exclude='*2.a(*2.o)' -o /dev/null %t3.lds %t1.o
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## If a lazy definition appears after the backward reference, don't warn.
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# RUN: ld.lld --fatal-warnings --warn-backrefs %t3.lds %t1.o %t3.lds -o /dev/null
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# CHECK: warning: backward reference detected: foo in {{.*}}1.o refers to {{.*}}2.a
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## A backward reference from %t1.o to %t2.o
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## --warn-backrefs-exclude= applies to --start-lib covered object files.
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# RUN: ld.lld --warn-backrefs --start-lib %t2.o --end-lib %t1.o -o /dev/null 2>&1 | \
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# RUN: FileCheck --check-prefix=OBJECT %s
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# RUN: ld.lld --fatal-warnings --warn-backrefs --warn-backrefs-exclude=%/t2.o --start-lib %/t2.o --end-lib %t1.o -o /dev/null
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## If a lazy definition appears after the backward reference, don't warn.
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# RUN: ld.lld --fatal-warnings --warn-backrefs --start-lib %t2.o --end-lib %t1.o --start-lib %t2.o --end-lib -o /dev/null
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# OBJECT: warning: backward reference detected: foo in {{.*}}1.o refers to {{.*}}2.o
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## Back reference from an fetched --start-lib to a previous --start-lib.
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# RUN: ld.lld -m elf_x86_64 -u _start --warn-backrefs --start-lib %/t2.o --end-lib \
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# RUN: --start-lib %t1.o --end-lib -o /dev/null 2>&1 | FileCheck --check-prefix=OBJECT %s
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## --warn-backrefs-exclude=%/t2.o can be used for a fetched --start-lib.
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# RUN: ld.lld --fatal-warnings -m elf_x86_64 -u _start --warn-backrefs --warn-backrefs-exclude=%/t2.o --start-lib %/t2.o --end-lib --start-lib %t1.o --end-lib -o /dev/null
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## Don't warn if the definition and the backward reference are in a group.
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# RUN: echo '.globl bar; bar:' | llvm-mc -filetype=obj -triple=x86_64 - -o %t3.o
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# RUN: echo '.globl foo; foo: call bar' | llvm-mc -filetype=obj -triple=x86_64 - -o %t4.o
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# RUN: ld.lld --fatal-warnings --warn-backrefs %t1.o --start-lib %t3.o %t4.o --end-lib -o /dev/null
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# RUN: rm -f %t34.a && llvm-ar rcS %t34.a %t3.o %t4.o
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# RUN: ld.lld --fatal-warnings --warn-backrefs %t1.o %t34.a -o /dev/null
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## We don't report backward references to weak symbols as they can be overridden later.
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# RUN: echo '.weak foo; foo:' | llvm-mc -filetype=obj -triple=x86_64 - -o %tweak.o
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# RUN: ld.lld --fatal-warnings --warn-backrefs --start-lib %tweak.o --end-lib %t1.o %t2.o -o /dev/null
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## Check common symbols. A common sym might later be replaced by a non-common definition.
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# RUN: echo '.comm obj, 4' | llvm-mc -filetype=obj -triple=x86_64 -o %tcomm.o
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# RUN: echo '.type obj,@object; .data; .globl obj; .p2align 2; obj: .long 55; .size obj, 4' | llvm-mc -filetype=obj -triple=x86_64 -o %tstrong.o
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# RUN: echo '.globl foo; foo: movl obj(%rip), %eax' | llvm-mc -triple=x86_64 -filetype=obj -o %t5.o
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# RUN: llvm-ar rcs %tcomm.a %tcomm.o
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# RUN: llvm-ar rcs %tstrong.a %tstrong.o
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# RUN: ld.lld --warn-backrefs %tcomm.a %t1.o %t5.o 2>&1 -o /dev/null | FileCheck --check-prefix=COMM %s
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# RUN: ld.lld --fatal-warnings --fortran-common --warn-backrefs %tcomm.a %t1.o %t5.o %tstrong.a 2>&1 -o /dev/null
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# RUN: ld.lld --warn-backrefs --no-fortran-common %tcomm.a %t1.o %t5.o %tstrong.a 2>&1 -o /dev/null | FileCheck --check-prefix=COMM %s
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# COMM: ld.lld: warning: backward reference detected: obj in {{.*}}5.o refers to {{.*}}comm.a
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## If a lazy definition appears after the backward reference, don't warn.
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## A traditional Unix linker will resolve the reference to the later definition.
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# RUN: ld.lld --fatal-warnings --warn-backrefs %t2.a %t1.o %t2.a -o /dev/null
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## lld fetches the archive while GNU ld resolves the reference to the shared definition.
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## Warn because the resolution rules are different.
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# RUN: ld.lld --warn-backrefs %t2.a %t1.o %t2.so -o /dev/null 2>&1 | FileCheck %s
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## This is a limitation. The resolution rules are different but
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## --warn-backrefs does not warn.
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# RUN: ld.lld --fatal-warnings --warn-backrefs %t2.a %t1.o %t2.so %t2.a -o /dev/null
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## In GNU linkers, -u does not make a backward reference.
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# RUN: ld.lld --fatal-warnings --warn-backrefs -u foo %t2.a %t1.o -o /dev/null
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## -u does not make a backward reference.
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# RUN: ld.lld --fatal-warnings --warn-backrefs -u foo %t2.a %t1.o -o /dev/null
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# RUN: not ld.lld --warn-backrefs-exclude='[' 2>&1 | FileCheck --check-prefix=INVALID %s
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# INVALID: error: --warn-backrefs-exclude: invalid glob pattern, unmatched '[': [
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.globl _start, foo
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_start:
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call foo
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