Document that -C opt-level=0 implies -C debug-assertions.

rust-lang · Dec 26, 2018 · 284f0d3 · 284f0d3
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commit 284f0d3
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/doc/rustc/src/codegen-options/index.md b/src/doc/rustc/src/codegen-options/index.md
@@ -187,7 +187,7 @@ This flag lets you control debug information:
 
 This flag lets you control the optimization level.
 
-* `0`: no optimizations
+* `0`: no optimizations, also turn on `cfg(debug_assertions)`.
 * `1`: basic optimizations
 * `2`: some optimizations
 * `3`: all optimizations