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It was raised on libc-help [1] that some Linux kernel interfaces expect the libc to define __USE_TIME_BITS64 to indicate the time_t size for the kABI. Different than defined by the initial y2038 design document [2], the __USE_TIME_BITS64 is only defined for ABIs that support more than one time_t size (by defining the _TIME_BITS for each module). The 64 bit time_t redirects are now enabled using a different internal define (__USE_TIME64_REDIRECTS). There is no expected change in semantic or code generation. Checked on x86_64-linux-gnu, i686-linux-gnu, aarch64-linux-gnu, and arm-linux-gnueabi [1] https://sourceware.org/pipermail/libc-help/2024-January/006557.html [2] https://sourceware.org/glibc/wiki/Y2038ProofnessDesign Reviewed-by: DJ Delorie <dj@redhat.com>
19 lines
416 B
C
19 lines
416 B
C
#ifndef __timeval_defined
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#define __timeval_defined 1
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#include <bits/types.h>
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/* A time value that is accurate to the nearest
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microsecond but also has a range of years. */
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struct timeval
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{
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#ifdef __USE_TIME64_REDIRECTS
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__time64_t tv_sec; /* Seconds. */
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__suseconds64_t tv_usec; /* Microseconds. */
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#else
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__time_t tv_sec; /* Seconds. */
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__suseconds_t tv_usec; /* Microseconds. */
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#endif
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};
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#endif
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