43 lines
1.4 KiB
Plaintext
43 lines
1.4 KiB
Plaintext
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---
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configure.ac | 12 ++++++++++++
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src/file.h | 6 ++++--
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2 files changed, 16 insertions(+), 2 deletions(-)
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--- src/file.h
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+++ src/file.h 2023-07-28 14:37:17.000000000 +0000
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@@ -159,9 +159,11 @@
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/*
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* Dec 31, 23:59:59 9999
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* we need to make sure that we don't exceed 9999 because some libc
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- * implementations like muslc crash otherwise
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+ * implementations like muslc crash otherwise. If you are unlucky
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+ * to be running on a system with a 32 bit time_t, then it is even less.
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*/
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-#define MAX_CTIME CAST(time_t, 0x3afff487cfULL)
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+#define MAX_CTIME \
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+ CAST(time_t, sizeof(time_t) > 4 ? 0x3afff487cfULL : 0x7fffffffULL)
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#define FILE_BADSIZE CAST(size_t, ~0ul)
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#define MAXDESC 64 /* max len of text description/MIME type */
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--- configure.ac
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+++ configure.ac 2023-07-31 06:45:39.269468700 +0000
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@@ -152,6 +152,18 @@ AC_TYPE_UINT64_T
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AC_TYPE_INT64_T
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AC_TYPE_INTPTR_T
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AC_TYPE_UINTPTR_T
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+m4_ifdef([AC_SYS_YEAR2038], [AC_SYS_YEAR2038], [
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+# GNU libc only allows setting _TIME_BITS when FILE_OFFSET_BITS is also set.
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+# GNU libc defines __TIMESIZE on systems where _TIME_BITS can be set.
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+AS_IF([test X"$ac_cv_sys_file_offset_bits" = X"64"], [
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+ AC_CHECK_DECL(__TIMESIZE, [
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+ AC_DEFINE([_TIME_BITS], [64], [Number of bits in a timestamp, on hosts where this is settable.])
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+ ], [], [
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+AC_INCLUDES_DEFAULT
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+#include <time.h>
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+ ])
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+ ])
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+])
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AC_FUNC_MMAP
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AC_FUNC_FORK
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AC_FUNC_MBRTOWC
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