WAT: Fix sprintf() security warning (#1532)

ubaidsk · web-flow · commit 8f62ac4ff1ac · 2023-02-18T10:18:18.000+05:30
diff --git a/src/libasr/codegen/wasm_to_wat.cpp b/src/libasr/codegen/wasm_to_wat.cpp
@@ -299,7 +299,7 @@ class WATVisitor : public WASMDecoder<WATVisitor>,
                 escaped_str += ch;
             } else {
                 std::string byte(2, ' ');
-                sprintf(byte.data(), "%02x", uint8_t(ch));
+                snprintf(byte.data(), 3, "%02x", uint8_t(ch));
                 escaped_str += "\\" + byte;
             }
         }

Original file line number	Diff line number	Diff line change
`@@ -299,7 +299,7 @@ class WATVisitor : public WASMDecoder<WATVisitor>,`
`299`	`299`	`escaped_str += ch;`
`300`	`300`	`} else {`
`301`	`301`	`std::string byte(2, ' ');`
`302`		`- sprintf(byte.data(), "%02x", uint8_t(ch));`
	`302`	`+ snprintf(byte.data(), 3, "%02x", uint8_t(ch));`
`303`	`303`	`escaped_str += "\\" + byte;`
`304`	`304`	`}`
`305`	`305`	`}`