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b7ae41e6ca
If configure script is executed with stricter cflags
"-Werrorr=implicit-function-declaration -Werror=implicit-int"
then detection of few features will fail.
Checking for C99 vsnprintf : not found
Checking for HAVE_SHARED_MMAP : not found
Checking for HAVE_MREMAP : not found
lib/replace/test/shared_mmap.c:18:1:
error: return type defaults to ‘int’ [-Werror=implicit-int]
main()
^~~~
lib/replace/test/shared_mmap.c: In function ‘main’:
lib/replace/test/shared_mmap.c:25:16:
error: implicit declaration of function ‘exit’
[-Werror=implicit-function-declaration]
if (fd == -1) exit(1);
^~~~
lib/replace/test/shared_mmap.c:25:16:
warning: incompatible implicit declaration of built-in function ‘exit’
lib/replace/test/shared_mmap.c:25:16:
note: include ‘<stdlib.h>’ or provide a declaration of ‘exit’
Signed-off-by: Lukas Slebodnik <lslebodn@redhat.com>
Reviewed-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
30 lines
749 B
C
30 lines
749 B
C
void foo(const char *format, ...)
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{
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va_list ap;
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int len;
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char buf[20];
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long long l = 1234567890;
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l *= 100;
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va_start(ap, format);
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len = vsnprintf(buf, 0, format, ap);
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va_end(ap);
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if (len != 5) exit(1);
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va_start(ap, format);
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len = vsnprintf(0, 0, format, ap);
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va_end(ap);
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if (len != 5) exit(2);
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if (snprintf(buf, 3, "hello") != 5 || strcmp(buf, "he") != 0) exit(3);
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if (snprintf(buf, 20, "%lld", l) != 12 || strcmp(buf, "123456789000") != 0) exit(4);
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if (snprintf(buf, 20, "%zu", 123456789) != 9 || strcmp(buf, "123456789") != 0) exit(5);
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if (snprintf(buf, 20, "%2\$d %1\$d", 3, 4) != 3 || strcmp(buf, "4 3") != 0) exit(6);
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if (snprintf(buf, 20, "%s", 0) < 3) exit(7);
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printf("1");
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exit(0);
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}
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int main(void) { foo("hello"); }
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