https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91062
Bug ID: 91062
Summary: gcc.dg/ipa/ipa-pta-1.c dump contains garbage when gcc
was configured with --enable-checking=all
Product: gcc
Version: 10.0
Status: UNCONFIRMED
Keywords: GC
Severity: normal
Priority: P3
Component: ipa
Assignee: unassigned at gcc dot gnu.org
Reporter: amylaar at gcc dot gnu.org
CC: marxin at gcc dot gnu.org
Target Milestone: ---
Host: x86_64-pc-linux-gnu (probably doesn't really matter)
Target: native or cross
A number of symbol names in the dump file have been replaced by what looks like
ggc erased memory. The problem can be hidden by adding a suitable min_expand
value,
e.g. (for native unix):
make check-gcc RUNTESTFLAGS='--target_board=unix/--param=ggc-min-expand=30
ipa.exp=ipa-pta-1.c'
on a machine with 16 GB RAM + 8 GB swap.
OTOH, I haven't been able to reproduce this using a compiler that hasn't been
configured with --enable-checking, or merely with --enable-checking=yes, even
when adding --param=ggc-min-expand=0 .
We've originally observed this in a variant of gcc 8.2, so this bug has
probably been around for a while.
