disable 64-bit CheckedMul on 32-bit

thestinger · thestinger · commit 7db605cd158e · 2013-08-11T02:58:52.000-04:00
code generation problem reported as issue #8449
diff --git a/src/libstd/num/num.rs b/src/libstd/num/num.rs
@@ -827,7 +827,8 @@ impl CheckedMul for i32 {
     }
 }
 
-#[cfg(not(stage0))]
+// FIXME: #8449: should not be disabled on 32-bit
+#[cfg(not(stage0), target_word_size = "64")]
 impl CheckedMul for i64 {
     #[inline]
     fn checked_mul(&self, v: &i64) -> Option<i64> {
@@ -893,7 +894,8 @@ impl CheckedMul for u32 {
     }
 }
 
-#[cfg(not(stage0))]
+// FIXME: #8449: should not be disabled on 32-bit
+#[cfg(not(stage0), target_word_size = "64")]
 impl CheckedMul for u64 {
     #[inline]
     fn checked_mul(&self, v: &u64) -> Option<u64> {

Original file line number	Diff line number	Diff line change
`@@ -827,7 +827,8 @@ impl CheckedMul for i32 {`
`827`	`827`	`}`
`828`	`828`	`}`
`829`	`829`
`830`		`-#[cfg(not(stage0))]`
	`830`	`+// FIXME: #8449: should not be disabled on 32-bit`
	`831`	`+#[cfg(not(stage0), target_word_size = "64")]`
`831`	`832`	`impl CheckedMul for i64 {`
`832`	`833`	`#[inline]`
`833`	`834`	`fn checked_mul(&self, v: &i64) -> Option<i64> {`
`@@ -893,7 +894,8 @@ impl CheckedMul for u32 {`
`893`	`894`	`}`
`894`	`895`	`}`
`895`	`896`
`896`		`-#[cfg(not(stage0))]`
	`897`	`+// FIXME: #8449: should not be disabled on 32-bit`
	`898`	`+#[cfg(not(stage0), target_word_size = "64")]`
`897`	`899`	`impl CheckedMul for u64 {`
`898`	`900`	`#[inline]`
`899`	`901`	`fn checked_mul(&self, v: &u64) -> Option<u64> {`