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gcc: newer gcc trip on -Wstringop-truncation for valid uses of strncpy()

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strncpy() is correctly used to fill in a zero-*padded* (not
zero-terminated) field in several places.  Make gcc not complain about
those uses.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
This commit is contained in:
H. Peter Anvin 2018-06-02 23:46:21 -07:00
parent 3cb9068ee0
commit c4e16f7e7c
1 changed files with 3 additions and 0 deletions
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3
configure.ac
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@ -278,6 +278,9 @@ dnl Suppress format warning on Windows targets due to their <inttypes.h>
PA_ADD_CFLAGS([-Wpedantic-ms-format],[-Wno-pedantic-ms-format])
PA_ADD_CFLAGS([-Wc90-c99-compat])
PA_ADD_CFLAGS([-Wlong-long],[-Wno-long-long])
dnl This is needed because we intentionally expect strncpy() to fill
dnl in a zero-padded (not zero-terminated) buffer in several backends
PA_ADD_CFLAGS([-Wstringop-truncation],[-Wno-stringop-truncation])
dnl PA_ADD_CFLAGS([-Wwrite-strings])
PA_ARG_ENABLED([werror],
[compile with -Werror to error out on any warning],