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authorErik Desjardins <erikdesjardins@users.noreply.github.com>2022-02-19 10:35:44 -0500
committerErik Desjardins <erikdesjardins@users.noreply.github.com>2022-02-19 10:36:29 -0500
commitc2e84fa5fc4788a8bcb97fbcdc2fa78359e44121 (patch)
tree32836b1faf50d739ca745caf583e4cde1d25481e
parentd5769e9843dede495551a781cf947b631984868f (diff)
downloadrust-c2e84fa5fc4788a8bcb97fbcdc2fa78359e44121.tar.gz
rust-c2e84fa5fc4788a8bcb97fbcdc2fa78359e44121.zip
reduce default uninit_const_chunk_threshold to 16 (from 256)
-rw-r--r--compiler/rustc_session/src/options.rs4
-rw-r--r--src/test/codegen/uninit-consts.rs4
2 files changed, 4 insertions, 4 deletions
diff --git a/compiler/rustc_session/src/options.rs b/compiler/rustc_session/src/options.rs
index 26bb268a039..11204df7aea 100644
--- a/compiler/rustc_session/src/options.rs
+++ b/compiler/rustc_session/src/options.rs
@@ -1485,9 +1485,9 @@ options! {
         "in diagnostics, use heuristics to shorten paths referring to items"),
     ui_testing: bool = (false, parse_bool, [UNTRACKED],
         "emit compiler diagnostics in a form suitable for UI testing (default: no)"),
-    uninit_const_chunk_threshold: usize = (256, parse_number, [TRACKED],
+    uninit_const_chunk_threshold: usize = (16, parse_number, [TRACKED],
         "allow generating const initializers with mixed init/uninit chunks, \
-        and set the maximum number of chunks for which this is allowed (default: 256)"),
+        and set the maximum number of chunks for which this is allowed (default: 16)"),
     unleash_the_miri_inside_of_you: bool = (false, parse_bool, [TRACKED],
         "take the brakes off const evaluation. NOTE: this is unsound (default: no)"),
     unpretty: Option<String> = (None, parse_unpretty, [UNTRACKED],
diff --git a/src/test/codegen/uninit-consts.rs b/src/test/codegen/uninit-consts.rs
index d8c8fce105f..17457bc628b 100644
--- a/src/test/codegen/uninit-consts.rs
+++ b/src/test/codegen/uninit-consts.rs
@@ -15,8 +15,8 @@ pub struct PartiallyUninit {
 
 // CHECK: [[PARTIALLY_UNINIT:@[0-9]+]] = private unnamed_addr constant <{ [4 x i8], [12 x i8] }> <{ [4 x i8] c"\EF\BE\AD\DE", [12 x i8] undef }>, align 4
 
-// This shouldn't contain undef, since it contains more than 256 chunks
-// (the default value of uninit_const_chunk_threshold).
+// This shouldn't contain undef, since it contains more chunks
+// than the default value of uninit_const_chunk_threshold.
 // CHECK: [[UNINIT_PADDING_HUGE:@[0-9]+]] = private unnamed_addr constant <{ [32768 x i8] }> <{ [32768 x i8] c"{{.+}}" }>, align 4
 
 // CHECK: [[FULLY_UNINIT_HUGE:@[0-9]+]] = private unnamed_addr constant <{ [16384 x i8] }> undef