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timezone: pacify GCC -Wstringop-truncation

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Problem reported by Martin Sebor in:
https://sourceware.org/ml/libc-alpha/2017-11/msg00336.html
* timezone/zic.c (writezone): Use memcpy, not strncpy.
This commit is contained in:
Paul Eggert 2017-11-12 22:00:28 -08:00
parent 1ffe1ccb6e
commit e69897bf20
2 changed files with 8 additions and 1 deletions
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7
ChangeLog
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@ -1,3 +1,10 @@
2017-11-12 Paul Eggert <eggert@cs.ucla.edu>
timezone: pacify GCC -Wstringop-truncation
Problem reported by Martin Sebor in:
https://sourceware.org/ml/libc-alpha/2017-11/msg00336.html
* timezone/zic.c (writezone): Use memcpy, not strncpy.
2017-11-12 Florian Weimer <fweimer@redhat.com> 2017-11-12 Florian Weimer <fweimer@redhat.com>
* support/support.h (xstrndup): Declare. * support/support.h (xstrndup): Declare.

2
timezone/zic.c
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@ -1949,7 +1949,7 @@ writezone(const char *const name, const char *const string, char version)
} }
#define DO(field) fwrite(tzh.field, sizeof tzh.field, 1, fp) #define DO(field) fwrite(tzh.field, sizeof tzh.field, 1, fp)
tzh = tzh0; tzh = tzh0;
strncpy(tzh.tzh_magic, TZ_MAGIC, sizeof tzh.tzh_magic); memcpy(tzh.tzh_magic, TZ_MAGIC, sizeof tzh.tzh_magic);
tzh.tzh_version[0] = version; tzh.tzh_version[0] = version;
convert(thistypecnt, tzh.tzh_ttisgmtcnt); convert(thistypecnt, tzh.tzh_ttisgmtcnt);
convert(thistypecnt, tzh.tzh_ttisstdcnt); convert(thistypecnt, tzh.tzh_ttisstdcnt);