47 lines
1.7 KiB
Fortran
47 lines
1.7 KiB
Fortran
! Test the mixing BIND(C) and non BIND(C) common blocks.
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! RUN: %flang_fc1 -emit-llvm %s -o - 2>&1 | FileCheck %s --check-prefix=UNDERSCORING
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! RUN: %flang_fc1 -emit-llvm -fno-underscoring %s -o - 2>&1 | FileCheck %s --check-prefix=NO-UNDERSCORING
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! Scenario 1: Fortran symbols collide, but not the object file names, emit different
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! globals for each common
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subroutine bindc_common_with_same_fortran_name()
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real :: x
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common /com1/ x
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bind(c, name="not_com1") :: /com1/
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print *, x
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end subroutine
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subroutine bindc_common_with_same_fortran_name_2()
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real :: x(2), y(2)
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common /com1/ x
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print *, x
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end subroutine
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! Scenario 2: object file names of common block may collide (depending on
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! underscoring option). Merge common block into a single global symbol.
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subroutine bindc_common_colliding_with_normal_common()
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real :: x, y
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common /com3/ x
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common /com4/ y
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bind(c, name="some_common_") :: /com3/
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bind(c, name="__BLNK__") :: /com4/
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print *, x, y
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end subroutine
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subroutine bindc_common_colliding_with_normal_common_2()
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real :: x(2), y(2)
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common /some_common/ x
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common // y
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print *, x, y
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end subroutine
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! UNDERSCORING: @__BLNK__ = common global [8 x i8] zeroinitializer
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! UNDERSCORING: @com1_ = common global [8 x i8] zeroinitializer
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! UNDERSCORING: @not_com1 = common global [4 x i8] zeroinitializer
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! UNDERSCORING: @some_common_ = common global [8 x i8] zeroinitializer
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! NO-UNDERSCORING: @__BLNK__ = common global [8 x i8] zeroinitializer
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! NO-UNDERSCORING: @com1 = common global [8 x i8] zeroinitializer
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! NO-UNDERSCORING: @not_com1 = common global [4 x i8] zeroinitializer
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! NO-UNDERSCORING: @some_common = common global [8 x i8] zeroinitializer
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! NO-UNDERSCORING: @some_common_ = common global [4 x i8] zeroinitializer
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