run full query stack print just when RUST_BACKTRACE is set

hosseind75 · hosseind88 · commit a9053e4baf25 · 2020-10-09T20:57:45.000+03:30
diff --git a/src/driver.rs b/src/driver.rs
@@ -274,7 +274,10 @@ fn report_clippy_ice(info: &panic::PanicInfo<'_>, bug_report_url: &str) {
         handler.note_without_error(&note);
     }
 
-    TyCtxt::try_print_query_stack(&handler, Some(2));
+    // If backtraces are enabled, also print the query stack
+    let backtrace = env::var_os("RUST_BACKTRACE").map_or(false, |x| &x != "0");
+
+    TyCtxt::try_print_query_stack(&handler, Some(2), Some(backtrace));
 }
 
 fn toolchain_path(home: Option<String>, toolchain: Option<String>) -> Option<PathBuf> {

Original file line number	Diff line number	Diff line change
`@@ -274,7 +274,10 @@ fn report_clippy_ice(info: &panic::PanicInfo<'_>, bug_report_url: &str) {`
`274`	`274`	`handler.note_without_error(&note);`
`275`	`275`	`}`
`276`	`276`
`277`		`- TyCtxt::try_print_query_stack(&handler, Some(2));`
	`277`	`+ // If backtraces are enabled, also print the query stack`
	`278`	`+ let backtrace = env::var_os("RUST_BACKTRACE").map_or(false, \|x\| &x != "0");`
	`279`	`+`
	`280`	`+ TyCtxt::try_print_query_stack(&handler, Some(2), Some(backtrace));`
`278`	`281`	`}`
`279`	`282`
`280`	`283`	`fn toolchain_path(home: Option<String>, toolchain: Option<String>) -> Option<PathBuf> {`