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9be77d1f9c
This adds a test for the obscure case where an fd is redirected to itself. This is tricky because the dup2 will not clear the CLO_EXEC bit. So do it manually; also posix_spawn can't be used in this case.
80 lines
1.3 KiB
Fish
80 lines
1.3 KiB
Fish
# RUN: %fish -C "set helper %fish_test_helper" %s
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# Check that we don't leave stray FDs.
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$helper print_fds
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# CHECK: 0 1 2
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$helper print_fds 0>&-
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# CHECK: 1 2
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$helper print_fds 0>&- 2>&-
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# CHECK: 1
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false | $helper print_fds 0>&-
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# CHECK: 0 1 2
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$helper print_fds </dev/null
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# CHECK: 0 1 2
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$helper print_fds </dev/null
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# CHECK: 0 1 2
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$helper print_fds 3</dev/null
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# CHECK: 0 1 2 3
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# This attempts to trip a case where the file opened in fish
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# has the same fd as the redirection. In this case, the dup2
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# does not clear the CLO_EXEC bit.
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$helper print_fds 4</dev/null
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# CHECK: 0 1 2 4
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$helper print_fds 5</dev/null
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# CHECK: 0 1 2 5
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$helper print_fds 6</dev/null
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# CHECK: 0 1 2 6
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$helper print_fds 7</dev/null
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# CHECK: 0 1 2 7
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$helper print_fds 8</dev/null
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# CHECK: 0 1 2 8
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$helper print_fds 9</dev/null
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# CHECK: 0 1 2 9
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$helper print_fds 10</dev/null
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# CHECK: 0 1 2 10
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$helper print_fds 11</dev/null
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# CHECK: 0 1 2 11
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$helper print_fds 12</dev/null
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# CHECK: 0 1 2 12
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$helper print_fds 13</dev/null
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# CHECK: 0 1 2 13
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$helper print_fds 14</dev/null
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# CHECK: 0 1 2 14
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$helper print_fds 15</dev/null
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# CHECK: 0 1 2 15
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$helper print_fds 16</dev/null
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# CHECK: 0 1 2 16
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$helper print_fds 17</dev/null
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# CHECK: 0 1 2 17
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$helper print_fds 18</dev/null
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# CHECK: 0 1 2 18
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$helper print_fds 19</dev/null
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# CHECK: 0 1 2 19
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$helper print_fds 20</dev/null
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# CHECK: 0 1 2 20
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