https://sourceware.org/bugzilla/show_bug.cgi?id=33400
Bug ID: 33400
Summary: Option to make ld plugin warnings fatal
Product: binutils
Version: 2.45
Status: NEW
Severity: normal
Priority: P2
Component: ld
Assignee: unassigned at sourceware dot org
Reporter: sam at gentoo dot org
Target Milestone: ---
Today I had this when looking at an ODR issue with LTO:
```
/usr/lib/gcc/x86_64-pc-linux-gnu/16/../../../../x86_64-pc-linux-gnu/bin/ld:
warning: size of symbol `yylval' changed from 8 in aclyacc.o (symbol from
plugin) to 48 in /tmp/ccAkh7eZ.ltran
s0.ltrans.o
/usr/lib/gcc/x86_64-pc-linux-gnu/16/../../../../x86_64-pc-linux-gnu/bin/ld:
warning: NOTE: size discrepancies can cause real problems. Investigation is
advised.
/usr/lib/gcc/x86_64-pc-linux-gnu/16/../../../../x86_64-pc-linux-gnu/bin/ld:
warning: size of symbol `yyval' changed from 8 in aclyacc.o (symbol from
plugin) to 48 in /tmp/ccAkh7eZ.ltrans
0.ltrans.o
/usr/lib/gcc/x86_64-pc-linux-gnu/16/../../../../x86_64-pc-linux-gnu/bin/ld:
warning: NOTE: size discrepancies can cause real problems. Investigation is
advised.
```
Is it possible to make plugin warnings (ideally *only* plugin warnings) be
errors, other than -Wl,--fatal-warnings?
Even better again would be for this to somehow be controllable via GCC's
-Wodr/-Werror=lto-type-mismatch but that would mean the plugin had to feed it
back.
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