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gcc error when inline without static

· 3 min read

gcc error when inline without static​

inline only​

C code​

#include <stdio.h>

inline int func() { printf("dll\n"); }

int main() { func(); }

asm code​

  .section __TEXT,__text,regular,pure_instructions
  .build_version macos, 11, 0 sdk_version 11, 1
  .globl _main                   ## -- Begin function main
  .p2align 4, 0x90
_main:                                  ## @main
  .cfi_startproc
## %bb.0:
  pushq %rbp
  .cfi_def_cfa_offset 16
  .cfi_offset %rbp, -16
  movq %rsp, %rbp
  .cfi_def_cfa_register %rbp
  subq $16, %rsp
  callq _func
  xorl %ecx, %ecx
  movl %eax, -4(%rbp)          ## 4-byte Spill
  movl %ecx, %eax
  addq $16, %rsp
  popq %rbp
  retq
  .cfi_endproc
                                        ## -- End function
.subsections_via_symbols

With static​

C code​

#include <stdio.h>

static inline int func() { printf("dll\n"); }

int main() { func(); }

asm code​

  .section __TEXT,__text,regular,pure_instructions
  .build_version macos, 11, 0 sdk_version 11, 1
  .globl _main                   ## -- Begin function main
  .p2align 4, 0x90
_main:                                  ## @main
  .cfi_startproc
## %bb.0:
  pushq %rbp
  .cfi_def_cfa_offset 16
  .cfi_offset %rbp, -16
  movq %rsp, %rbp
  .cfi_def_cfa_register %rbp
  subq $16, %rsp
  callq _func
  xorl %ecx, %ecx
  movl %eax, -4(%rbp)          ## 4-byte Spill
  movl %ecx, %eax
  addq $16, %rsp
  popq %rbp
  retq
  .cfi_endproc
                                        ## -- End function
  .p2align 4, 0x90         ## -- Begin function func
_func:                                  ## @func
  .cfi_startproc
## %bb.0:
  pushq %rbp
  .cfi_def_cfa_offset 16
  .cfi_offset %rbp, -16
  movq %rsp, %rbp
  .cfi_def_cfa_register %rbp
  subq $16, %rsp
  leaq L_.str(%rip), %rdi
  movb $0, %al
  callq _printf
  movl -4(%rbp), %ecx
  movl %eax, -8(%rbp)          ## 4-byte Spill
  movl %ecx, %eax
  addq $16, %rsp
  popq %rbp
  retq
  .cfi_endproc
                                        ## -- End function
  .section __TEXT,__cstring,cstring_literals
L_.str:                                 ## @.str
  .asciz "dll\n"

.subsections_via_symbols

With __attribute__​

C code​

#include <stdio.h>

#define inline __attribute__((alwyas_inline))

inline int func() { printf("dll\n"); }

int main() { func(); }

asm code​

  .section __TEXT,__text,regular,pure_instructions
  .build_version macos, 11, 0 sdk_version 11, 1
  .globl _func                   ## -- Begin function func
  .p2align 4, 0x90
_func:                                  ## @func
  .cfi_startproc
## %bb.0:
  pushq %rbp
  .cfi_def_cfa_offset 16
  .cfi_offset %rbp, -16
  movq %rsp, %rbp
  .cfi_def_cfa_register %rbp
  subq $16, %rsp
  leaq L_.str(%rip), %rdi
  movb $0, %al
  callq _printf
  movl -4(%rbp), %ecx
  movl %eax, -8(%rbp)          ## 4-byte Spill
  movl %ecx, %eax
  addq $16, %rsp
  popq %rbp
  retq
  .cfi_endproc
                                        ## -- End function
  .globl _main                   ## -- Begin function main
  .p2align 4, 0x90
_main:                                  ## @main
  .cfi_startproc
## %bb.0:
  pushq %rbp
  .cfi_def_cfa_offset 16
  .cfi_offset %rbp, -16
  movq %rsp, %rbp
  .cfi_def_cfa_register %rbp
  subq $16, %rsp
  callq _func
  xorl %ecx, %ecx
  movl %eax, -4(%rbp)          ## 4-byte Spill
  movl %ecx, %eax
  addq $16, %rsp
  popq %rbp
  retq
  .cfi_endproc
                                        ## -- End function
  .section __TEXT,__cstring,cstring_literals
L_.str:                                 ## @.str
  .asciz "dll\n"

.subsections_via_symbols

latex (math) support for markdown

· One min read

Math Equations​

  • import tha plugins in docusaurus.config.js
const math = require("remark-math");
const katex = require("rehype-katex");
remarkPlugins: [math],
rehypePlugins: [katex],

under stylesheets

stylesheets: [
  {
    href: 'https://cdn.jsdelivr.net/npm/katex@0.13.24/dist/katex.min.css',
    type: 'text/css',
    integrity:
      'sha384-odtC+0UGzzFL/6PNoE8rX/SPcQDXBJ+uRepguP4QkPCm2LBxH3FA3y+fKSiJ+AmM',
    crossorigin: 'anonymous',
  },
],
  • install modules
npm install --save remark-math@3 rehype-katex@5 hast-util-is-element@1.1.0