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# Test that undefined weak externals (global_var) and (foo) don't cause
# link failures and resolve to zero.
# RUN: llvm-mc -filetype=obj -triple=wasm32-unknown-unknown -o %t.o %s
# RUN: wasm-ld -strip-all %t.o -o %t.wasm
# RUN: obj2yaml %t.wasm | FileCheck %s
# Also verify test that strong references in another file do cause link
# failure (See https://github.com/llvm/llvm-project/issues/60806)
# RUN: llvm-mc -filetype=obj -triple=wasm32-unknown-unknown %p/Inputs/strong-refs.s -o %t-strong.o
# RUN: not wasm-ld -strip-all %t.o %t-strong.o -o %t.wasm 2>&1 | FileCheck --check-prefix=ERROR %s
# RUN: not wasm-ld -strip-all %t-strong.o %t.o -o %t.wasm 2>&1 | FileCheck --check-prefix=ERROR %s
# ERROR: undefined symbol: global_var
.functype foo () -> (i32)
.globl get_address_of_foo
get_address_of_foo:
.functype get_address_of_foo () -> (i32)
i32.const foo
end_function
.globl get_address_of_global_var
get_address_of_global_var:
.functype get_address_of_global_var () -> (i32)
i32.const global_var
end_function
.globl _start
_start:
.functype _start () -> ()
call get_address_of_global_var
drop
call get_address_of_foo
drop
call foo
drop
end_function
.weak foo
.weak global_var
# CHECK: --- !WASM
# CHECK-NEXT: FileHeader:
# CHECK-NEXT: Version: 0x1
# CHECK-NEXT: Sections:
# CHECK-NEXT: - Type: TYPE
# CHECK-NEXT: Signatures:
# CHECK-NEXT: - Index: 0
# CHECK-NEXT: ParamTypes: []
# CHECK-NEXT: ReturnTypes:
# CHECK-NEXT: - I32
# CHECK-NEXT: - Index: 1
# CHECK-NEXT: ParamTypes: []
# CHECK-NEXT: ReturnTypes: []
# CHECK-NEXT: - Type: FUNCTION
# CHECK-NEXT: FunctionTypes: [ 0, 0, 0, 1 ]
# CHECK-NEXT: - Type: TABLE
# CHECK-NEXT: Tables:
# CHECK-NEXT: - Index: 0
# CHECK-NEXT: ElemType: FUNCREF
# CHECK-NEXT: Limits:
# CHECK-NEXT: Flags: [ HAS_MAX ]
# CHECK-NEXT: Minimum: 0x1
# CHECK-NEXT: Maximum: 0x1
# CHECK-NEXT: - Type: MEMORY
# CHECK-NEXT: Memories:
# CHECK-NEXT: - Minimum: 0x2
# CHECK-NEXT: - Type: GLOBAL
# CHECK-NEXT: Globals:
# CHECK-NEXT: - Index: 0
# CHECK-NEXT: Type: I32
# CHECK-NEXT: Mutable: true
# CHECK-NEXT: InitExpr:
# CHECK-NEXT: Opcode: I32_CONST
# CHECK-NEXT: Value: 66560
# CHECK-NEXT: - Type: EXPORT
# CHECK-NEXT: Exports:
# CHECK-NEXT: - Name: memory
# CHECK-NEXT: Kind: MEMORY
# CHECK-NEXT: Index: 0
# CHECK-NEXT: - Name: _start
# CHECK-NEXT: Kind: FUNCTION
# CHECK-NEXT: Index: 3
# CHECK-NEXT: - Type: CODE
# CHECK-NEXT: Functions:
# CHECK-NEXT: - Index: 0
# CHECK-NEXT: Locals:
# CHECK-NEXT: Body: 000B
# CHECK-NEXT: - Index: 1
# CHECK-NEXT: Locals:
# CHECK-NEXT: Body: 4180808080000B
# CHECK-NEXT: - Index: 2
# CHECK-NEXT: Locals:
# CHECK-NEXT: Body: 4180808080000B
# CHECK-NEXT: - Index: 3
# CHECK-NEXT: Locals:
# CHECK-NEXT: Body: 1082808080001A1081808080001A1080808080001A0B
# CHECK-NEXT: ...
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