Declare compile-time string '-' in x86 and wasm_x86

Author: ubaidsk

src/libasr/codegen/asr_to_x86.cpp

@@ -141,6 +141,7 @@ class ASRToX86Visitor : public ASR::BaseVisitor<ASRToX86Visitor>
         for (auto &s : m_global_strings) {
             emit_data_string(m_a, s.first, s.second);
         }
+        emit_data_string(m_a, "string-", "-"); // - symbol for printing negative ints
 
     }
 

src/libasr/codegen/wasm_to_x86.cpp

@@ -351,6 +351,7 @@ class X86Visitor : public WASMDecoder<X86Visitor>,
             std::string label = "string" + std::to_string(s.first);
             emit_data_string(m_a, label, s.second);
         }
+        emit_data_string(m_a, "string-", "-"); // - symbol for printing negative ints
 
         emit_elf32_footer(m_a);
     }