32764 2003-11-04 20:16 0000 zlib shared library exposes too many symbols 2003-11-06 14:45:11 0000 1 1 1 Unclassified Gentoo Linux Library unspecified All Linux RESOLVED FIXED P2 normal --- 1 duvall@comfychair.org azarah@gentoo.org duvall@comfychair.org 2003-11-04 20:16:49 0000 I sent the following bug report to the maintainers, too, but thought I'd file it here for good measure. When building zlib as a shared library, it is possible on a number of platforms to make symbols which are entirely internal to the library invisible to anything linking to it. Solaris uses what it calls a mapfile, and GNU ld uses a version script, but they're exactly the same thing (for these purposes, at any rate). This came up because a recent build of zsh broke due to it defining a function, zcalloc(), which was duplicated in zlib, even though it's not part of the official zlib interface. The attached patch works on Linux and Solaris, and "make test" passes. The version of zlib shipped in Solaris uses the exact same mapfile, so it should be well tested. (For completeness, the Solaris version uses an LDSHARED set to -G -KPIC -h libz.so.1 -z defs -z text -z combreloc -M mapfile -L. -lc but that's somewhat beyond the scope of this bug report.) duvall@comfychair.org 2003-11-04 20:17:16 0000 Created an attachment (id=20277) Aforementioned patch azarah@gentoo.org 2003-11-06 13:59:53 0000 Did you receive any feedback from the zlib guys yet ? duvall@comfychair.org 2003-11-06 14:02:33 0000 Nope. I'll follow-up when I do, but I don't have any sense for how responsive they are, so no guarantees on when that might be. :) azarah@gentoo.org 2003-11-06 14:45:11 0000 Ok, added in -r4. 20277 2003-11-04 20:17 0000 Aforementioned patch zlib.mapfile.patch text/plain LS0tIGNvbmZpZ3VyZS5vcmlnCTIwMDMtMTEtMDQgMjA6MDA6MTkuMTkyMDU3NDAwIC0wODAwCisr KyBjb25maWd1cmUJMjAwMy0xMS0wNCAyMDowMDoyMi41MjQzMjc3ODQgLTA4MDAKQEAgLTcyLDcg KzcyLDggQEAKICAgU0ZMQUdTPSR7Q0ZMQUdTLSItZlBJQyAtTzMifQogICBDRkxBR1M9IiRjZmxh Z3MiCiAgIGNhc2UgYCh1bmFtZSAtcyB8fCBlY2hvIHVua25vd24pIDI+L2Rldi9udWxsYCBpbgot ICBMaW51eCB8IGxpbnV4KSBMRFNIQVJFRD0ke0xEU0hBUkVELSJnY2MgLXNoYXJlZCAtV2wsLXNv bmFtZSxsaWJ6LnNvLjEifTs7CisgIExpbnV4IHwgbGludXgpIExEU0hBUkVEPSR7TERTSEFSRUQt ImdjYyAtc2hhcmVkIC1XbCwtc29uYW1lLGxpYnouc28uMSJ9CisJCSBNQVBGSUxFPSR7TUFQRklM RS0iLVdsLC0tdmVyc2lvbi1zY3JpcHQsbWFwZmlsZSJ9OzsKICAgKikgICAgICAgICAgICAgTERT SEFSRUQ9JHtMRFNIQVJFRC0iZ2NjIC1zaGFyZWQifTs7CiAgIGVzYWMKIGVsc2UKQEAgLTEwNCw3 ICsxMDUsOCBAQAogCSAgICAgTERTSEFSRUQ9JHtMRFNIQVJFRC0iY2MgLWR5IC1LUElDIC1HIn07 OwogICBTdW5PU1wgNSopIFNGTEFHUz0ke0NGTEFHUy0iLWZhc3QgLXhjZzg5IC1LUElDIC1SLiJ9 CiAgICAgICAgICAgICAgQ0ZMQUdTPSR7Q0ZMQUdTLSItZmFzdCAteGNnODkifQotCSAgICAgTERT SEFSRUQ9JHtMRFNIQVJFRC0iY2MgLUcifTs7CisJICAgICBNQVBGSUxFPSR7TUFQRklMRS0iLU0g bWFwZmlsZSJ9CisJICAgICBMRFNIQVJFRD0ke0xEU0hBUkVELSJjYyAtRyJ9OzsKICAgU3VuT1Nc IDQqKSBTRkxBR1M9JHtDRkxBR1MtIi1PMiAtUElDIn0KIAkgICAgIENGTEFHUz0ke0NGTEFHUy0i LU8yIn0KIAkgICAgIExEU0hBUkVEPSR7TERTSEFSRUQtImxkIn07OwpAQCAtMTM4LDYgKzE0MCw3 IEBACiAgICAgZWNobyAnTm8gc2hhcmVkIGxpYnJhcnkgc3VwcHBvcnQ7IHRyeSB3aXRob3V0IGRl ZmluaW5nIENDIGFuZCBDRkxBR1MnCiAgICAgc2hhcmVkPTA7CiAgIGZpCisgIExEU0hBUkVEPSIk e0xEU0hBUkVEfSAke01BUEZJTEV9IgogZmkKIGlmIHRlc3QgJHNoYXJlZCAtZXEgMDsgdGhlbgog ICBMRFNIQVJFRD0iJENDIgotLS0gL2Rldi9udWxsCTIwMDMtMTAtMTUgMjI6MzE6NTIuMDAwMDAw MDAwIC0wNzAwCisrKyBtYXBmaWxlCTIwMDMtMTEtMDQgMTk6NDQ6NTkuNzQyMjY5OTg0IC0wODAw CkBAIC0wLDAgKzEsNDYgQEAKK3sKKwlnbG9iYWw6CisJCXpsaWJWZXJzaW9uIDsKKwkJZGVmbGF0 ZUluaXRfIDsKKwkJZGVmbGF0ZUluaXQyXyA7CisJCWRlZmxhdGUgOworCQlkZWZsYXRlU2V0RGlj dGlvbmFyeSA7CisJCWRlZmxhdGVDb3B5IDsKKwkJZGVmbGF0ZVJlc2V0IDsKKwkJZGVmbGF0ZVBh cmFtcyA7CisJCWRlZmxhdGVFbmQgOworCQlpbmZsYXRlSW5pdF8gOworCQlpbmZsYXRlSW5pdDJf IDsKKwkJaW5mbGF0ZSA7CisJCWluZmxhdGVTZXREaWN0aW9uYXJ5IDsKKwkJaW5mbGF0ZVN5bmMg OworCQlpbmZsYXRlUmVzZXQgOworCQlpbmZsYXRlRW5kIDsKKwkJY29tcHJlc3MgOworCQljb21w cmVzczIgOworCQl1bmNvbXByZXNzIDsKKwkJZ3pvcGVuIDsKKwkJZ3pkb3BlbiA7CisJCWd6c2V0 cGFyYW1zIDsKKwkJZ3pyZWFkIDsKKwkJZ3p3cml0ZSA7CisJCWd6cHJpbnRmIDsKKwkJZ3pwdXRz IDsKKwkJZ3pnZXRzIDsKKwkJZ3pwdXRjIDsKKwkJZ3pnZXRjIDsKKwkJZ3pmbHVzaCA7CisJCWd6 c2VlayA7CisJCWd6cmV3aW5kIDsKKwkJZ3p0ZWxsIDsKKwkJZ3plb2YgOworCQlnemNsb3NlIDsK KwkJZ3plcnJvciA7CisJCWFkbGVyMzIgOworCQljcmMzMiA7CisJCXpFcnJvciA7CisJCWluZmxh dGVTeW5jUG9pbnQgOworCQlnZXRfY3JjX3RhYmxlIDsKKwlsb2NhbDoKKwkJKjsKK307Cg==