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* [Bug gdb/29795] New: [gdb, PowerPC] gdb.base/store.exp fails to return the correct value
@ 2022-11-16 19:20 cel at us dot ibm.com
2022-11-16 19:25 ` [Bug gdb/29795] " cel at us dot ibm.com
0 siblings, 1 reply; 2+ messages in thread
From: cel at us dot ibm.com @ 2022-11-16 19:20 UTC (permalink / raw)
To: gdb-prs
https://sourceware.org/bugzilla/show_bug.cgi?id=29795
Bug ID: 29795
Summary: [gdb, PowerPC] gdb.base/store.exp fails to return the
correct value
Product: gdb
Version: 12.1
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: gdb
Assignee: unassigned at sourceware dot org
Reporter: cel at us dot ibm.com
Target Milestone: ---
The gdb.base/store.exp fails on Power10, with:
gcc (GCC) 12.2.1 20220819 (Red Hat 12.2.1-2)
Fedora release 36 (Thirty Six)
It generates 5 failures:
(gdb) PASS: gdb.base/store.exp: continue to wack_doublest
print l
$29 = -1.9375
(gdb) FAIL: gdb.base/store.exp: var doublest l; print old l, expecting -1
print r
$30 = 3.20641835417611559822573486476171432e-4938
(gdb) FAIL: gdb.base/store.exp: var doublest l; print old r, expecting -2
set variable l = 4
...
print l
$32 = 3.999996185302734375
(gdb) FAIL: gdb.base/store.exp: var doublest l; print incremented l, expecting
\
2print l
...
$54 = -1.9375
(gdb) FAIL: gdb.base/store.exp: upvar doublest l; print old l, expecting -1
print r
$55 = 3.20680779558280486578025331197365593e-4938
(gdb) FAIL: gdb.base/store.exp: upvar doublest l; print old r, expecting -2
set variable l = 4
I suspect it has something to do with the "new" default use of IEEE 128-bit
floating point.
NOTE: the test does not fail on Power 10 with:
gcc (GCC) 11.2.1 20220127 (Red Hat 11.2.1-9)
Red Hat Enterprise Linux release 9.0 (Plow)
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* [Bug gdb/29795] [gdb, PowerPC] gdb.base/store.exp fails to return the correct value
2022-11-16 19:20 [Bug gdb/29795] New: [gdb, PowerPC] gdb.base/store.exp fails to return the correct value cel at us dot ibm.com
@ 2022-11-16 19:25 ` cel at us dot ibm.com
0 siblings, 0 replies; 2+ messages in thread
From: cel at us dot ibm.com @ 2022-11-16 19:25 UTC (permalink / raw)
To: gdb-prs
https://sourceware.org/bugzilla/show_bug.cgi?id=29795
Carl E Love <cel at us dot ibm.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |ulrich.weigand at de dot ibm.com,
| |vries at gcc dot gnu.org,
| |will_schmidt at vnet dot ibm.com
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2022-11-16 19:20 [Bug gdb/29795] New: [gdb, PowerPC] gdb.base/store.exp fails to return the correct value cel at us dot ibm.com
2022-11-16 19:25 ` [Bug gdb/29795] " cel at us dot ibm.com
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