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Commitb6a87ed

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macdicepull[bot]
authored andcommitted
Don't use Perl pack('Q') in 039_end_of_wal.pl.
'Q' for 64 bit integers turns out not to work on 32 bit Perl, asrevealed by the build farm. Use 'II' instead, and deal with endianness.Back-patch to 12, likebae868c.Discussion:https://postgr.es/m/ZQ4r1vHcryBsSi_V%40paquier.xyz
1 parent7e367dd commitb6a87ed

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‎src/test/recovery/t/039_end_of_wal.pl‎

Lines changed: 18 additions & 6 deletions
Original file line numberDiff line numberDiff line change
@@ -13,6 +13,13 @@
1313

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use integer;# causes / operator to use integer math
1515

16+
# Is this a big-endian system ("network" byte order)? We can't use 'Q' in
17+
# pack() calls because it's not available in some perl builds, so we need to
18+
# break 64 bit LSN values into two 'I' values. Fortunately we don't need to
19+
# deal with high values, so we can just write 0 for the high order 32 bits, but
20+
# we need to know the endianness to do that.
21+
my$BIG_ENDIAN =pack("L", 0x12345678)eqpack("N", 0x12345678);
22+
1623
# Header size of record header.
1724
my$RECORD_HEADER_SIZE = 24;
1825

@@ -125,13 +132,16 @@ sub build_record_header
125132
# This needs to follow the structure XLogRecord:
126133
# I for xl_tot_len
127134
# I for xl_xid
128-
#Q for xl_prev
135+
#II for xl_prev
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# C for xl_info
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# C for xl_rmid
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# BB for two bytes of padding
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# I for xl_crc
133-
returnpack("IIQCCBBI",
134-
$xl_tot_len,$xl_xid,$xl_prev,$xl_info,$xl_rmid, 0, 0,$xl_crc);
140+
returnpack("IIIICCBBI",
141+
$xl_tot_len,$xl_xid,
142+
$BIG_ENDIAN ? 0 :$xl_prev,
143+
$BIG_ENDIAN ?$xl_prev : 0,
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$xl_info,$xl_rmid, 0, 0,$xl_crc);
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}
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# Build a fake WAL page header, based on the data given by the caller
@@ -149,10 +159,12 @@ sub build_page_header
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# S for xlp_magic
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# S for xlp_info
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# I for xlp_tli
152-
#Q for xlp_pageaddr
162+
#II for xlp_pageaddr
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# I for xlp_rem_len
154-
returnpack("SSIQI",
155-
$xlp_magic,$xlp_info,$xlp_tli,$xlp_pageaddr,$xlp_rem_len);
164+
returnpack("SSIIII",
165+
$xlp_magic,$xlp_info,$xlp_tli,
166+
$BIG_ENDIAN ? 0 :$xlp_pageaddr,
167+
$BIG_ENDIAN ?$xlp_pageaddr : 0,$xlp_rem_len);
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}
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# Make sure we are far away enough from the end of a page that we could insert

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