Bug fix: permit the creation of zero-sized sections.
Obtained from: elftoolchain MFC after: 1 month
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49ca10d40c
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c0308c2c84
@ -534,22 +534,24 @@ _libelf_write_scn(Elf *e, char *nf, Elf_Scn *s, off_t rc)
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int ec;
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size_t fsz, msz, nobjects;
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uint32_t sh_type;
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uint64_t sh_off;
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uint64_t sh_off, sh_size;
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int elftype;
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Elf_Data *d, dst;
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if ((ec = e->e_class) == ELFCLASS32)
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if ((ec = e->e_class) == ELFCLASS32) {
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sh_type = s->s_shdr.s_shdr32.sh_type;
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else
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sh_size = (uint64_t) s->s_shdr.s_shdr32.sh_size;
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} else {
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sh_type = s->s_shdr.s_shdr64.sh_type;
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sh_size = s->s_shdr.s_shdr64.sh_size;
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}
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/*
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* Ignore sections that do not allocate space in the file.
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*/
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if (sh_type == SHT_NOBITS || sh_type == SHT_NULL)
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if (sh_type == SHT_NOBITS || sh_type == SHT_NULL || sh_size == 0)
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return (rc);
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elftype = _libelf_xlate_shtype(sh_type);
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assert(elftype >= ELF_T_FIRST && elftype <= ELF_T_LAST);
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