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* [Bug libbacktrace/114941] New: libbacktrace build is broken for FDPIC uclibc targets by gcc-14-5173-g2b64e4a54042 @ 2024-05-03 20:08 jcmvbkbc at gcc dot gnu.org 2024-05-03 20:14 ` [Bug libbacktrace/114941] libbacktrace build is broken for FDPIC uclibc targets by r14-5173-g2b64e4a54042 pinskia at gcc dot gnu.org ` (3 more replies) 0 siblings, 4 replies; 5+ messages in thread From: jcmvbkbc at gcc dot gnu.org @ 2024-05-03 20:08 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114941 Bug ID: 114941 Summary: libbacktrace build is broken for FDPIC uclibc targets by gcc-14-5173-g2b64e4a54042 Product: gcc Version: 14.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: libbacktrace Assignee: unassigned at gcc dot gnu.org Reporter: jcmvbkbc at gcc dot gnu.org CC: ian at gcc dot gnu.org Target Milestone: --- A fix for the https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111315 turned on the use of the dl_iterate_phdr interface in the libbacktrace, but since the type of the dl_phdr_info::dlpi_addr on FDPIC targets using uclibc is not compatible with uintptr_t the libstdc++-v3 build breaks for these targets with the following message: elf.c:7372:62: error: incompatible type for argument 6 of ‘elf_add’ 7372 | if (elf_add (pd->state, filename, descriptor, NULL, 0, info->dlpi_addr, | ~~~~^~~~~~~~~~~ | | | struct elf32_fdpic_loadaddr elf.c:6504:20: note: expected ‘uintptr_t’ {aka ‘unsigned int’} but argument is of type ‘struct elf32_fdpic_loadaddr’ ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug libbacktrace/114941] libbacktrace build is broken for FDPIC uclibc targets by r14-5173-g2b64e4a54042 2024-05-03 20:08 [Bug libbacktrace/114941] New: libbacktrace build is broken for FDPIC uclibc targets by gcc-14-5173-g2b64e4a54042 jcmvbkbc at gcc dot gnu.org @ 2024-05-03 20:14 ` pinskia at gcc dot gnu.org 2024-05-03 22:37 ` ian at airs dot com ` (2 subsequent siblings) 3 siblings, 0 replies; 5+ messages in thread From: pinskia at gcc dot gnu.org @ 2024-05-03 20:14 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114941 --- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> --- So a patch like what was done in r0-56719-g34208acf14fa02 needs to be done to libbacktrace . Basically this has always been broken. ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug libbacktrace/114941] libbacktrace build is broken for FDPIC uclibc targets by r14-5173-g2b64e4a54042 2024-05-03 20:08 [Bug libbacktrace/114941] New: libbacktrace build is broken for FDPIC uclibc targets by gcc-14-5173-g2b64e4a54042 jcmvbkbc at gcc dot gnu.org 2024-05-03 20:14 ` [Bug libbacktrace/114941] libbacktrace build is broken for FDPIC uclibc targets by r14-5173-g2b64e4a54042 pinskia at gcc dot gnu.org @ 2024-05-03 22:37 ` ian at airs dot com 2024-05-04 8:35 ` jcmvbkbc at gcc dot gnu.org 2024-05-27 7:17 ` jcmvbkbc at gcc dot gnu.org 3 siblings, 0 replies; 5+ messages in thread From: ian at airs dot com @ 2024-05-03 22:37 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114941 Ian Lance Taylor <ian at airs dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |ian at airs dot com --- Comment #2 from Ian Lance Taylor <ian at airs dot com> --- What is the correct way to get the address at which the shared library was loaded when using FDPIC? ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug libbacktrace/114941] libbacktrace build is broken for FDPIC uclibc targets by r14-5173-g2b64e4a54042 2024-05-03 20:08 [Bug libbacktrace/114941] New: libbacktrace build is broken for FDPIC uclibc targets by gcc-14-5173-g2b64e4a54042 jcmvbkbc at gcc dot gnu.org 2024-05-03 20:14 ` [Bug libbacktrace/114941] libbacktrace build is broken for FDPIC uclibc targets by r14-5173-g2b64e4a54042 pinskia at gcc dot gnu.org 2024-05-03 22:37 ` ian at airs dot com @ 2024-05-04 8:35 ` jcmvbkbc at gcc dot gnu.org 2024-05-27 7:17 ` jcmvbkbc at gcc dot gnu.org 3 siblings, 0 replies; 5+ messages in thread From: jcmvbkbc at gcc dot gnu.org @ 2024-05-04 8:35 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114941 --- Comment #3 from jcmvbkbc at gcc dot gnu.org --- (In reply to Ian Lance Taylor from comment #2) > What is the correct way to get the address at which the shared library was > loaded when using FDPIC? There's no single base address in case of FDPIC, the macro __RELOC_POINTER(ptr, loadaddr) can be used with the elf32_fdpic_loadaddr::dlpi_addr as the last argument to translate an address according to the load map. An example is available in the libgcc/unwind-dw2-fde-dip.c ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug libbacktrace/114941] libbacktrace build is broken for FDPIC uclibc targets by r14-5173-g2b64e4a54042 2024-05-03 20:08 [Bug libbacktrace/114941] New: libbacktrace build is broken for FDPIC uclibc targets by gcc-14-5173-g2b64e4a54042 jcmvbkbc at gcc dot gnu.org ` (2 preceding siblings ...) 2024-05-04 8:35 ` jcmvbkbc at gcc dot gnu.org @ 2024-05-27 7:17 ` jcmvbkbc at gcc dot gnu.org 3 siblings, 0 replies; 5+ messages in thread From: jcmvbkbc at gcc dot gnu.org @ 2024-05-27 7:17 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114941 --- Comment #4 from jcmvbkbc at gcc dot gnu.org --- Proposed fix: https://gcc.gnu.org/pipermail/gcc-patches/2024-May/652798.html ^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2024-05-27 7:17 UTC | newest] Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2024-05-03 20:08 [Bug libbacktrace/114941] New: libbacktrace build is broken for FDPIC uclibc targets by gcc-14-5173-g2b64e4a54042 jcmvbkbc at gcc dot gnu.org 2024-05-03 20:14 ` [Bug libbacktrace/114941] libbacktrace build is broken for FDPIC uclibc targets by r14-5173-g2b64e4a54042 pinskia at gcc dot gnu.org 2024-05-03 22:37 ` ian at airs dot com 2024-05-04 8:35 ` jcmvbkbc at gcc dot gnu.org 2024-05-27 7:17 ` jcmvbkbc at gcc dot gnu.org
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