Oops, it does. -Warray-bounds. It's even included in -Wall and I had it on. Unfortunately it only works at -O2 and higher (-ftree-vrp) and I had -Os...
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This is probably going to be the deciding factor that convinces me to kill the current musl default path-specific -Os/-O3 config and use -O2 by default for everything. Broken warnings are not fun.
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Hm, nope. -Os includes it too. And it works on a minimal test case but not the case that I hit in real code in musl...
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And here's the resulting bug report: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87192 …
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