https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97520
Bug ID: 97520
Summary: ICE in calc_stmt, at gimple-range.cc:399 with "-O1
-fno-tree-fre -ftree-vrp"
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: suochenyao at 163 dot com
Target Milestone: ---
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OS and Platform:
CentOS Linux release 7.8.2003 (Core), x86_64 GNU/Linux
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Program:
char a;
void b() {
char *c[5];
char *d = &a;
&d;
*(c[4] = d);
}
int main() { return 0; }
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gcc version:
$ gcc -v
Using built-in specs.
COLLECT_GCC=/home/suocy/bin/gcc-dev/bin/gcc
COLLECT_LTO_WRAPPER=/home/suocy/bin/gcc-dev/libexec/gcc/x86_64-pc-linux-gnu/11.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../configure --prefix=/home/suocy/bin/gcc-dev
--disable-multilib --enable-languages=c,c++
Thread model: posix
Supported LTO compression algorithms: zlib
gcc version 11.0.0 20201020 (experimental) (GCC)
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Command Lines:
$ gcc -Wall -Wextra -fno-strict-aliasing -fwrapv -O1 -fno-tree-fre -ftree-vrp
a.c
a.c: In function ‘b’:
a.c:5:3: warning: statement with no effect [-Wunused-value]
5 | &d;
| ^~
a.c:6:3: warning: value computed is not used [-Wunused-value]
6 | *(c[4] = d);
| ^~~~~~~~~~~
during GIMPLE pass: evrp
a.c:8:1: internal compiler error: in calc_stmt, at gimple-range.cc:399
8 | int main() { return 0; }
| ^~~
0x7f6095 gimple_ranger::calc_stmt(irange&, gimple*, tree_node*)
../../gcc/gimple-range.cc:399
0x188dc5f gimple_ranger::range_of_stmt(irange&, gimple*, tree_node*)
../../gcc/gimple-range.cc:992
0x188a498 gimple_ranger::range_of_expr(irange&, tree_node*, gimple*)
../../gcc/gimple-range.cc:883
0x10a236d range_query::value_of_expr(tree_node*, gimple*)
../../gcc/value-query.cc:85
0x172bc71 hybrid_folder::value_of_expr(tree_node*, gimple*)
../../gcc/gimple-ssa-evrp.c:235
0xf5c73e substitute_and_fold_dom_walker::before_dom_children(basic_block_def*)
../../gcc/tree-ssa-propagate.c:1112
0x1703777 dom_walker::walk(basic_block_def*)
../../gcc/domwalk.c:309
0xf5b955 substitute_and_fold_engine::substitute_and_fold(basic_block_def*)
../../gcc/tree-ssa-propagate.c:1283
0x172b8e6 execute_early_vrp
../../gcc/gimple-ssa-evrp.c:349
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
