https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114720
Bug ID: 114720
Summary: gcc.misc-tests/gcov-22.c loops
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: gcov-profile
Assignee: unassigned at gcc dot gnu.org
Reporter: ro at gcc dot gnu.org
Target Milestone: ---
Target: sparc*-sun-solaris2.11, sparc64-unknown-linux-gnu
The new gcc.misc-tests/gcov-22.c test loops on Solaris/SPARC (32 and 64-bit)
and
Linux/sparc64:
WARNING: gcc.misc-tests/gcov-22.c execution test program timed out.
+FAIL: gcc.misc-tests/gcov-22.c execution test
+FAIL: gcc.misc-tests/gcov-22.c gcov: 0 failures in line counts, 0 in branch
percentages, 32 in condition/decision, 0 in return percentages, 0 in
intermediate format
[...]
truss -u reveals the test loops in longjmp like this:
/1@1: -> libc:longjmp(0x25450, 0x1, 0xffbfe9e8, 0x12b04)
/1@1: <- libc:longjmp() = 1
/1@1: -> libc:longjmp(0x25450, 0x1, 0xffbfe9e8, 0x12b04)
/1@1: <- libc:longjmp() = 1
[...]
I'm astonished the test works anywere, actually. AFAICS, the issue is this:
setdest
-> setjmp returns 0
setdest returns 2
-> jump
-> longjmp make setdest return 1
-> jump
-> longjmp ...
continuing ad infinitum.
