fprintf: Fixup truncation possibility pointed out by gcc -O2
Addresses this warning: [ 26%] Building C object CMakeFiles/dwarves.dir/dwarves_fprintf.c.o /home/acme/git/pahole/dwarves_fprintf.c: In function ‘type__fprintf’: /home/acme/git/pahole/dwarves_fprintf.c:709:47: error: ‘%s’ directive output may be truncated writing up to 257 bytes into a region of size 256 [-Werror=format-truncation=] 709 | snprintf(namebfptr, sizeof(namebfptr), "* %s", name); | ^~ /home/acme/git/pahole/dwarves_fprintf.c:709:5: note: ‘snprintf’ output between 3 and 260 bytes into a destination of size 258 709 | snprintf(namebfptr, sizeof(namebfptr), "* %s", name); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ cc1: all warnings being treated as errors Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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@ -706,7 +706,7 @@ next_type:
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tag__is_enumeration(ptype)) && type__name(tag__type(ptype), cu) == NULL) {
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if (name == namebfptr)
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goto out_type_not_found;
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snprintf(namebfptr, sizeof(namebfptr), "* %s", name);
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snprintf(namebfptr, sizeof(namebfptr), "* %.*s", (int)sizeof(namebfptr) - 3, name);
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tconf.rel_offset = 1;
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name = namebfptr;
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type = ptype;
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