Segmentation fault with output arguments

[YangWang92]

Hi Yan,
I got a segmentation fault when I try to add output arguments of gas,

../../../build/gas benchmark.gas -o benchmark.bin
[1] 51430 segmentation fault (core dumped) ../../../build/gas benchmark.gas -o benchmark.bin

And it works well without output arguments.

Here are backtraces of the segment fault.

(gdb) bt
#0 __memcpy_avx_unaligned () at ../sysdeps/x86_64/multiarch/memcpy-avx-unaligned.S:245
#1 0x000000000047d9b8 in std::__cxx11::basic_string<char, std::char_traits, std::allocator >::_M_construct<char*> (this=0x7fffffffd330, __beg=0xa7ab40 "",
__end=0x14f5680 <error: Cannot access memory at address 0x14f5680>) at /usr/include/c++/9/bits/basic_string.tcc:225
#2 0x000000000045e47b in MyVisitor::visitVar_declaration (this=0x7fffffffd930, ctx=0x94de20) at /home/wy/gas/grammar/visitor.cpp:78
#3 0x0000000000447080 in dadaParser::Var_declarationContext::accept (this=0x94de20, visitor=0x7fffffffd930) at /home/wy/gas/grammar/generated/dadaParser.cpp:997
#4 0x0000000000410d72 in antlr4::tree::AbstractParseTreeVisitor::visit (this=0x7fffffffd930, tree=0x94de20)
at /home/wy/gas/thirdparty/antlr4-runtime/src/tree/AbstractParseTreeVisitor.h:18
#5 0x000000000045e044 in MyVisitor::visitStatement (this=0x7fffffffd930, ctx=0x94ddd0) at /home/wy/gas/grammar/visitor.cpp:60
#6 0x0000000000446af6 in dadaParser::StatementContext::accept (this=0x94ddd0, visitor=0x7fffffffd930) at /home/wy/gas/grammar/generated/dadaParser.cpp:912
#7 0x0000000000410d72 in antlr4::tree::AbstractParseTreeVisitor::visit (this=0x7fffffffd930, tree=0x94ddd0)
at /home/wy/gas/thirdparty/antlr4-runtime/src/tree/AbstractParseTreeVisitor.h:18
#8 0x000000000045deef in MyVisitor::visitCompound_statement (this=0x7fffffffd930, ctx=0x94dc70) at /home/wy/gas/grammar/visitor.cpp:52
#9 0x00000000004460d0 in dadaParser::Compound_statementContext::accept (this=0x94dc70, visitor=0x7fffffffd930) at /home/wy/gas/grammar/generated/dadaParser.cpp:668
#10 0x0000000000410d72 in antlr4::tree::AbstractParseTreeVisitor::visit (this=0x7fffffffd930, tree=0x94dc70)
at /home/wy/gas/thirdparty/antlr4-runtime/src/tree/AbstractParseTreeVisitor.h:18
#11 0x000000000045d7d6 in MyVisitor::visitKernel_defination (this=0x7fffffffd930, ctx=0x94d040) at /home/wy/gas/grammar/visitor.cpp:21
#12 0x0000000000448f56 in dadaParser::Kernel_definationContext::accept (this=0x94d040, visitor=0x7fffffffd930) at /home/wy/gas/grammar/generated/dadaParser.cpp:1446
#13 0x0000000000410d72 in antlr4::tree::AbstractParseTreeVisitor::visit (this=0x7fffffffd930, tree=0x94d040)
at /home/wy/gas/thirdparty/antlr4-runtime/src/tree/AbstractParseTreeVisitor.h:18
#14 0x000000000045d63b in MyVisitor::visitTranslation_unit (this=0x7fffffffd930, ctx=0x91c2c0) at /home/wy/gas/grammar/visitor.cpp:12
#15 0x0000000000445bb6 in dadaParser::Translation_unitContext::accept (this=0x91c2c0, visitor=0x7fffffffd930) at /home/wy/gas/grammar/generated/dadaParser.cpp:606
#16 0x0000000000410d72 in antlr4::tree::AbstractParseTreeVisitor::visit (this=0x7fffffffd930, tree=0x91c2c0)
at /home/wy/gas/thirdparty/antlr4-runtime/src/tree/AbstractParseTreeVisitor.h:18
#17 0x0000000000407ebc in main (argc=4, argv=0x7fffffffe1c8) at /home/wy/gas/main.cpp:58

Env:

gcc-9 (Ubuntu 9.3.0-10ubuntu216.04) 9.3.0
g++-9 (Ubuntu 9.3.0-10ubuntu216.04) 9.3.0

[daadaada]

Hi,

Thank you for reporting this. However, I cannot reproduce the error :(

Could you please check the value of name before /home/wy/gas/grammar/visitor.cpp:52?

What is the stack size of your environment (you may check with ulimit -a)?