[Nasm-bugs] [Bug 3392689] New: ffmpeg and dav1d projects seem to have issues with new macro parsing.
noreply-nasm at dev.nasm.us
noreply-nasm at dev.nasm.us
Tue Jun 30 12:57:02 PDT 2020
https://bugzilla.nasm.us/show_bug.cgi?id=3392689
Bug ID: 3392689
Summary: ffmpeg and dav1d projects seem to have issues with new
macro parsing.
Product: NASM
Version: 2.15 (development)
Hardware: All
OS: All
Status: OPEN
Severity: normal
Priority: Medium
Component: Assembler
Assignee: nobody at nasm.us
Reporter: dalecurtis at chromium.org
CC: chang.seok.bae at intel.com, gorcunov at gmail.com,
hpa at zytor.com, nasm-bugs at nasm.us
Obtained from: Build from source archive using configure
I'm unsure if these are actually issues in nasm or the project.
/nasm -DPIC -felf64 -DARCH_X86_64 -W+error=all
-P../../third_party/ffmpeg/chromium/config/ChromeOS/linux/x64/config.asm
-I../../third_party/ffmpeg/chromium/c onfig/ChromeOS/linux/x64/
-I../../third_party/ffmpeg/libavcodec/x86/
-I../../third_party/ffmpeg/libavutil/x86/ -I../../third_party/ffmpeg/ -I./
-I../../ -Igen/ -DPIC -MD obj/third_party/ffmpeg/ffmpeg_nasm/blo ckdsp.o.d -o
obj/third_party/ffmpeg/ffmpeg_nasm/blockdsp.o
../../third_party/ffmpeg/libavcodec/x86/blockdsp.asm
../../third_party/ffmpeg/libavcodec/x86/blockdsp.asm:51: error: dropping
trailing empty parameter in call to multi-line macro `DEFINE_ARGS_INTERNAL'
[-w+error=macro-params-legacy]
../../third_party/ffmpeg/libavutil/x86/x86inc.asm:561: ... from macro
`PROLOGUE' defined here
The line it's complaining about is this:
DEFINE_ARGS_INTERNAL %0, %4, %5
The PROLOGUE macro is defined here:
https://source.chromium.org/chromium/chromium/src/+/master:third_party/ffmpeg/libavutil/x86/x86inc.asm;l=550
%macro PROLOGUE 2-5+ 0 ; #args, #regs, #xmm_regs, [stack_size,] arg_names...
%assign num_args %1
%assign regs_used %2
%assign xmm_regs_used %3
ASSERT regs_used >= num_args
SETUP_STACK_POINTER %4
ASSERT regs_used <= 15
PUSH_IF_USED 9, 10, 11, 12, 13, 14
ALLOC_STACK %4
LOAD_IF_USED 6, 7, 8, 9, 10, 11, 12, 13, 14
DEFINE_ARGS_INTERNAL %0, %4, %5
%endmacro
It's called with these arguments "1, 1, 0, blocks" which seems like it should
trigger the default argument of 0 to be filled in for %5
I've filed an issue against dav1d with more specifics on there issues:
https://code.videolan.org/videolan/dav1d/-/issues/343
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