https://sourceware.org/bugzilla/show_bug.cgi?id=25212
Bug ID: 25212
Summary: [RISCV] gas doesn't flag invalid march and mabi
combinations
Product: binutils
Version: 2.34 (HEAD)
Status: UNCONFIRMED
Severity: minor
Priority: P2
Component: gas
Assignee: unassigned at sourceware dot org
Reporter: luismarques at lowrisc dot org
Target Milestone: ---
This, by itself, isn't ideal:
$ touch test.s
$ riscv32-unknown-elf-as -march=rv32i -mabi=ilp32d test.s
$ echo $?
0
The hardfloat ABI should be detected as incompatible with the lack of the F/D
extension. This becomes more insidious when you don't realize that you are
implicitly passing the wrong -mabi option to gas:
$ riscv64-unknown-elf-gcc -c -v -march=rv64i test.s
(...)
COLLECT_GCC_OPTIONS='-c' '-v' '-march=rv64i' '-mabi=lp64d'
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