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| author | David Malcolm <dmalcolm@redhat.com> | 2020-08-14 10:48:30 -0400 |
|---|---|---|
| committer | Giuliano Belinassi <giuliano.belinassi@usp.br> | 2020-08-17 15:08:14 -0300 |
| commit | fd151a9ade829371897e4661f11ae296ab3bb174 (patch) | |
| tree | a19fb922a343c447d8920372ab8dc9cb3806c8ed /gcc/tree-ssa-loop-ch.c | |
| parent | c6ce0e5b967476fe698fefdb941d2944efe56090 (diff) | |
| download | gcc-fd151a9ade829371897e4661f11ae296ab3bb174.zip gcc-fd151a9ade829371897e4661f11ae296ab3bb174.tar.gz gcc-fd151a9ade829371897e4661f11ae296ab3bb174.tar.bz2 | |
analyzer: fix ICE on escaped unknown pointers [PR96611]
PR analyzer/96611 reports an ICE within the handling for unknown
functions, when passing a pointer to something accessed via a
global pointer, after an unknown function has already been called.
The first unknown function leads to the store being flagged, so
the access to the global pointer leads to (*unknown_svalue) for
the base region of the argument to the 2nd function, and thus
*unknown_svalue being reachable by the 2nd unknown function,
triggering an assertion failure.
Handle this case by rejecting attempts to get a cluster for
the unknown pointer, fixing the ICE.
gcc/analyzer/ChangeLog:
PR analyzer/96611
* store.cc (store::mark_as_escaped): Reject attempts to
get a cluster for an unknown pointer.
gcc/testsuite/ChangeLog:
PR analyzer/96611
* gcc.dg/analyzer/pr96611.c: New test.
Diffstat (limited to 'gcc/tree-ssa-loop-ch.c')
0 files changed, 0 insertions, 0 deletions