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| author | Stefan Schulze Frielinghaus <stefansf@linux.ibm.com> | 2020-04-27 18:09:07 +0200 |
|---|---|---|
| committer | Stefan Schulze Frielinghaus <stefansf@linux.ibm.com> | 2020-04-29 15:51:47 +0200 |
| commit | 1657178f59bf0c5b269a668bcdcc432fac3bbdd0 (patch) | |
| tree | 25f29525f2df3693ce7f659b6c4fa545605d6993 | |
| parent | a7201a085cc30f89944931d8fb1d7936f02a169f (diff) | |
| download | gcc-1657178f59bf0c5b269a668bcdcc432fac3bbdd0.zip gcc-1657178f59bf0c5b269a668bcdcc432fac3bbdd0.tar.gz gcc-1657178f59bf0c5b269a668bcdcc432fac3bbdd0.tar.bz2 | |
tree-optimization: Fix use of uninitialized variable [PR94774]
Array retval is not necessarily initialized by function is_call_safe and
may be used afterwards. Thus, initialize it explicitly.
gcc/ChangeLog:
2020-04-29 Stefan Schulze Frielinghaus <stefansf@linux.ibm.com>
PR tree-optimization/94774
* gimple-ssa-sprintf.c (try_substitute_return_value): Initialize
variable retval.
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/gimple-ssa-sprintf.c | 2 |
2 files changed, 7 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index a110062..f33193b 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2020-04-29 Stefan Schulze Frielinghaus <stefansf@linux.ibm.com> + + PR tree-optimization/94774 + * gimple-ssa-sprintf.c (try_substitute_return_value): Initialize + variable retval. + 2020-04-29 Richard Sandiford <richard.sandiford@arm.com> * calls.h (cxx17_empty_base_field_p): Turn into a function declaration. diff --git a/gcc/gimple-ssa-sprintf.c b/gcc/gimple-ssa-sprintf.c index 1879686..011c3e2 100644 --- a/gcc/gimple-ssa-sprintf.c +++ b/gcc/gimple-ssa-sprintf.c @@ -4120,7 +4120,7 @@ try_substitute_return_value (gimple_stmt_iterator *gsi, bool removed = false; /* The minimum and maximum return value. */ - unsigned HOST_WIDE_INT retval[2]; + unsigned HOST_WIDE_INT retval[2] = {0}; bool safe = is_call_safe (info, res, true, retval); if (safe |