dba7b0ef92
Changes of interest
o unit-tests: use private TMPDIR to avoid errors from other users
o avoid strdup in mkTempFile
o always use vfork
o job.c: do not create empty shell files in jobs mode
reduce unnecessary calls to waitpid
o cond.c: fix debug output for comparison operators in conditionals
138 lines
3.8 KiB
Makefile
138 lines
3.8 KiB
Makefile
# $NetBSD: varmod-gmtime.mk,v 1.10 2021/01/19 05:26:34 rillig Exp $
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#
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# Tests for the :gmtime variable modifier, which formats a timestamp
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# using strftime(3) in UTC.
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.if ${TZ:Uundefined} != "undefined" # see unit-tests/Makefile
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. error
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.endif
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# Test for the default time format, %c. Since the time always varies, it's
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# only possible to check for the general format here. The names of the
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# month and weekday are always in English, independent from the locale.
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# Example: Thu Oct 29 18:56:41 2020
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.if ${:U:gmtime:tW:M??? ??? ?? ??\:??\:?? ????} == ""
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. error
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.endif
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# modifier name too short, falling back to the SysV modifier.
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.if ${%Y:L:gmtim=1593536400} != "%Y"
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. error
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.endif
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# 2020-07-01T00:00:00Z
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.if ${%Y:L:gmtime=1593536400} != "2020"
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. error
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.endif
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# modifier name too long, falling back to the SysV modifier.
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.if ${%Y:L:gmtimer=1593536400} != "%Y"
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. error
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.endif
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# If the modifier name is not matched exactly, fall back to the
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# :from=to modifier.
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.if ${gmtime:L:gm%=local%} != "localtime"
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. error
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.endif
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# As of 2020-08-16, it is not possible to pass the seconds via a
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# variable expression. This is because parsing of the :gmtime
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# modifier stops at the '$' and returns to ApplyModifiers.
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#
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# There, a colon would be skipped but not a dollar.
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# Parsing therefore continues at the '$' of the ${:U159...}, looking
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# for an ordinary variable modifier.
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#
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# At this point, the ${:U} is expanded and interpreted as a variable
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# modifier, which results in the error message "Unknown modifier '1'".
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#
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# If ApplyModifier_Gmtime were to pass its argument through
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# ParseModifierPart, this would work.
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.if ${%Y:L:gmtime=${:U1593536400}} != "mtime=11593536400}"
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. error
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.endif
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# Before var.c 1.631 from 2020-10-31 21:40:20, it was possible to pass
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# negative time stamps to the :gmtime modifier, resulting in dates before
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# 1970. Going back 50 years in the past is not a practical use case for
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# make. Therefore, since var.c 1.631, negative time stamps produce a
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# parse error.
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.if ${:L:gmtime=-1} != ""
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. error
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.else
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. error
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.endif
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# Spaces were allowed before var.c 1.631 from 2020-10-31 21:40:20, not
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# because it would make sense but just as a side-effect from using strtoul.
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.if ${:L:gmtime= 1} != ""
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. error
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.endif
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# 0 means now; this differs from GNode.mtime, where a 0 means nonexistent.
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# Since "now" constantly changes, the strongest possible test is to match the
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# resulting pattern.
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.if !${:L:gmtime=0:tW:M??? ??? ?? ??\:??\:?? 20??}
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. error
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.endif
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.if ${:L:gmtime=1} != "Thu Jan 1 00:00:01 1970"
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. error
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.endif
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# INT32_MAX
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.if ${:L:gmtime=2147483647} != "Tue Jan 19 03:14:07 2038"
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. error
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.endif
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.if ${:L:gmtime=2147483648} == "Tue Jan 19 03:14:08 2038"
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# All systems that have unsigned time_t or 64-bit time_t.
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.elif ${:L:gmtime=2147483648} == "Fri Dec 13 20:45:52 1901"
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# FreeBSD-12.0-i386 still has 32-bit signed time_t, see
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# sys/x86/include/_types.h, __LP64__.
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#
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# Linux on 32-bit systems may still have 32-bit signed time_t, see
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# sysdeps/unix/sysv/linux/generic/bits/typesizes.h, __TIMESIZE.
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.else
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. error
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.endif
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# Integer overflow, at least before var.c 1.631 from 2020-10-31.
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# Because this modifier is implemented using strtoul, the parsed time was
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# ULONG_MAX, which got converted to -1. This resulted in a time stamp of
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# the second before 1970.
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#
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# Since var.c 1.631, the overflow is detected and produces a parse error.
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.if ${:L:gmtime=10000000000000000000000000000000} != ""
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. error
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.else
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. error
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.endif
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# Before var.c 1.631 from 2020-10-31, there was no error handling while
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# parsing the :gmtime modifier, thus no error message was printed. Parsing
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# stopped after the '=', and the remaining string was parsed for more variable
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# modifiers. Because of the unknown modifier 'e' from the 'error', the whole
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# variable value was discarded and thus not printed.
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.if ${:L:gmtime=error} != ""
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. error
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.else
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. error
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.endif
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all:
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