https://sourceware.org/bugzilla/show_bug.cgi?id=25380
Bug ID: 25380
Summary: Support section linkage 'unique' (multiple sections
with the same name)
Product: binutils
Version: unspecified
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: gas
Assignee: unassigned at sourceware dot org
Reporter: i at maskray dot me
Target Milestone: ---
Clang's integrated assembler supports multiple section with the same name.
% cat a.s
.section .text,"ax",@progbits,unique,1
nop
.section .text,"ax",@progbits,unique,2
nop
This is useful with -fno-unique-section-names -ffunction-sections.
-ffunction-sections by default generates .text.foo, .text.bar, etc. Using the
same string can save lots of space in .strtab
% cat a.c
void foo(){}
void bar(){}
% clang -fno-unique-section-names -ffunction-sections -no-integrated-as -c a.c
/tmp/a-d736bc.s: Assembler messages:
/tmp/a-d736bc.s:3: Error: junk at end of line, first unrecognized character is
`,'
/tmp/a-d736bc.s:22: Error: junk at end of line, first unrecognized character is
`,'
clang-10: error: assembler command failed with exit code 1 (use -v to see
invocation)
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