http://bugzilla.opensuse.org/show_bug.cgi?id=1150918 Bug ID: 1150918 Summary: LTO breaks debuginfo, no line info anymore Classification: openSUSE Product: openSUSE Tumbleweed Version: Current Hardware: x86-64 OS: Other Status: NEW Severity: Normal Priority: P5 - None Component: Development Assignee: martin.liska@suse.com Reporter: jengelh@inai.de QA Contact: qa-bugs@suse.de Blocks: 1133084 Found By: --- Blocker: --- Trying to step into the ldap_initialize function with gdb's "s" command has no effect; gdb skips over it. The "si" command enters it, but no source code is shown. This suggests debuginfo is missing from openldap2. However, all the -g flags are there and stripping is disabled. Rebuilding openldap2 with `%define lto_cflags %nil` cures the problem, therefore I conclude LTO is at fault of messing up the debuginfo. == Input == $ cat x.cpp #include int main() { LDAP *ld; ldap_initialize(&ld, ""); } $ g++ x.cpp -Wall -ggdb3 $ zypper in openldap2-debuginfo openldap2-debugsource libldap-2_4-2-debuginfo == Observed == gdb does not show the source code for the ldap_initialize function. This is probably because debuginfo is missing. $ LD_BIND_NOW=1 gdb a.out ... (gdb) b main Breakpoint 1 at 0x113d: file x.cpp, line 5. (gdb) r Starting program: /dev/shm/a.out Missing separate debuginfo for /lib64/libgcc_s.so.1 Try: zypper install -C "debuginfo(build-id)=61600d59ddb87699663206a26c0106e42bf11199" Missing separate debuginfo for /usr/lib64/libsasl2.so.3 Try: zypper install -C "debuginfo(build-id)=a79af1f708895503413b5ea76bf4b342e4c2ea61" [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib64/libthread_db.so.1". Breakpoint 1, main () at x.cpp:5 5 ldap_initialize(&ld, ""); (gdb) si 0x0000555555555141 5 ldap_initialize(&ld, ""); (gdb) 0x0000555555555148 5 ldap_initialize(&ld, ""); (gdb) 0x000055555555514b 5 ldap_initialize(&ld, ""); (gdb) 0x0000555555555030 in ldap_initialize@plt () (gdb) 0x00007ffff7f9e6a0 in ldap_initialize () from /usr/lib64/libldap_r-2.4.so.2 (gdb) 0x00007ffff7f9e6a2 in ldap_initialize () from /usr/lib64/libldap_r-2.4.so.2 (gdb) == What I expected instead == That gdb shows me "open.c" and the source code of ldap_initialize. (gdb) b main Breakpoint 1 at 0x113d: file x.cpp, line 5. (gdb) r Starting program: /dev/shm/a.out Missing separate debuginfo for /lib64/libgcc_s.so.1 Try: zypper install -C "debuginfo(build-id)=61600d59ddb87699663206a26c0106e42bf11199" Missing separate debuginfo for /usr/lib64/libsasl2.so.3 Try: zypper install -C "debuginfo(build-id)=a79af1f708895503413b5ea76bf4b342e4c2ea61" [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib64/libthread_db.so.1". Breakpoint 1, main () at x.cpp:5 5 ldap_initialize(&ld, ""); (gdb) s ldap_initialize (ldp=0x7fffffffdca8, url=0x555555556004 "") at open.c:236 236 { -- You are receiving this mail because: You are on the CC list for the bug.