https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113803
Bug ID: 113803
Summary: libgcc unwinder stops at calls to null function
pointer on some targets
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libgcc
Assignee: unassigned at gcc dot gnu.org
Reporter: fw at gcc dot gnu.org
Target Milestone: ---
Originally reported as a glibc bug:
https://sourceware.org/bugzilla/show_bug.cgi?id=31349
If a null pointer is called, the backtrace stops at the signal frame on most
GNU/Linux architectures (tried aarch64, s390x, x86-64), presumably due to the
null address in the signal context. On powerpc64le, backtracing continues as
expected. This does not seem to be related to use of the sigreturn trampoline
from the vDSO.
