Recent questions tagged GCC

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gcc - Using #pragma to suppress “Instance method not found” warnings in Xcode

I want to use #pragma (in Xcode) to suppress the warning: warning: instance method '-someMethod' not found (return type ... ~~~~~~~~~~~~~ See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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641 views

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gcc - Why doesn't `-finstrument-functions` work for me?

According to this answer,it should print all function names: [root@ test]# cat hw.c #include <stdio.h> int func( ... it's not working for me? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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520 views

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gcc - x86_64: Is it possible to "in-line substitute" PLT/GOT references?

I'm not sure what a good subject line for this question is, but here we go: In order to force code ... printf@plt, not the "resolved" one. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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599 views

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gcc - x86_64: Is it possible to "in-line substitute" PLT/GOT references?

I'm not sure what a good subject line for this question is, but here we go: In order to force code ... printf@plt, not the "resolved" one. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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642 views

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gcc - Compile an asm bootloader with external c code

I write a boot loader in asm and want to add some compiled C code in my project. I created a test function here ... But i can't call org 0x7C00 See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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658 views

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gcc - Using #pragma to suppress “Instance method not found” warnings in Xcode

I want to use #pragma (in Xcode) to suppress the warning: warning: instance method '-someMethod' not found (return type ... ~~~~~~~~~~~~~ See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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562 views

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gcc - Why doesn't `-finstrument-functions` work for me?

According to this answer,it should print all function names: [root@ test]# cat hw.c #include <stdio.h> int func( ... it's not working for me? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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485 views

1 answer

gcc - x86_64: Is it possible to "in-line substitute" PLT/GOT references?

I'm not sure what a good subject line for this question is, but here we go: In order to force code ... printf@plt, not the "resolved" one. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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757 views

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gcc - Force gfortran to stop program at first NaN

To debug my application (fortran 90) I want to turn all NaNs to signalling NaN. With default settings ... wrong floating operation reside. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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616 views

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gcc - C++ unique_ptr and map

I'm trying to use the C++0x unique_ptr class inside a map like so: // compile with `g++ main.cpp -std=gnu++0x ... (Ubuntu 4.4.3-4ubuntu5) 4.4.3 See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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696 views

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gcc - gfortran compiler Error: result of exponentiation exceeds the range of INTEGER(4)

I have this line in fortran and I'm getting the compiler error in the title. dFeV is a 1d array of ... allocate more space for that computation. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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488 views

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gcc - Ambiguous reference to variable

So I am doing 2 modules which are linking to the main program. The first one has all the variables defined ... close(1) end program wykres See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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gcc - Static linkage with glibc without calling main

I have created a simple hello world using NASM which calls printf and _exit from libc but does not use main. extern ... .19, and GCC 4.9.1 See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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812 views

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gcc - C++ Intrinsic not declared

Im learning to use intrinsics instead of asm-inlining. Yesterday, they were working but I always get error today. ... < endl; return 0; } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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807 views

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gcc - How to use static assert in C to check the types of parameters passed to a macro

I need to write a C macro that checks to ensure all parameters passed to it are unsigned and of the same integer ... assert in C [my own answer] See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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662 views

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gcc - Division and modulus using single divl instruction (i386, amd64)

I was trying to come up with inline assembly for gcc to get both division and modulus using single divl instruction. ... me on this? Thank you. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.9k views

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gcc compiling C++ code: undefined reference to `operator new[](unsigned long long)'

There's a C++ code: #include <stdio.h> int main() { int b = sizeof('a'); if(b==4) printf( ... gcc may miss. Many thanks for your considerations See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.4k views

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gcc - Warning: cast to/from pointer from/to integer of different size

I'm learning Pthreads. My code executes the way I want it to, I'm able to use it. But it gives me a warning ... ; } How can I fix this warning? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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472 views

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gcc - Using BX in Thumb code to call a Thumb function, or to jump to a Thumb instruction in another function

I'm trying to learn skills useful in firmware modding (for which i don't have source code) These questions ... return addr + 1 automatically? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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835 views

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gcc - understanding the __libc_init_array

I viewed the source code of __libc_init_array from http://newlib.sourcearchive.com/documentation/1.18.0/init_8c ... of these symbols? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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811 views

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gcc - correct usage of rpath (relative vs absolute)

When building a binary or library, specifying the rpath, i.e. -Wl,rpath,<path/to/lib> tells the linker where to ... and not of the link target. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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627 views

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gcc - Compile multiple C source fles into a unique object file

I have some C source files and I am using gcc. I basically want to compile all of them and create one single ... , in this case please tell me. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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940 views

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gcc - rpath=$ORIGIN not having desired effect?

I've got a binary "CeeloPartyServer" that needs to find libFoundation.so at runtime, on a FreeBSD machine. They' ... $ORIGIN. What am I missing? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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738 views

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gcc - Why is the linker terminating on me? when i build CLang

I am using opensuse, specific the variant on mono's website when you click vmware I get this error. Does anyone ... full text can be found here See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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593 views

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gcc - Does standard c library provides linked list etc. data structures?

Do standard C library implementations, especially glibc (the GNU C Library) provide linked lists, stack et al. data ... roll our own? Thanks. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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861 views

1 answer

gcc - What's the best g++ optimization level when building a debug target?

When you want to build something that's debuggable (g++ specifically, but perhaps shares an answer with gcc), ... how badly things jump around. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.3k views

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gcc - Getting Control Flow Graph from ANSI C code

I'm building tool for testing ansi c applications. Simply load code, view control flow graph, run test, mark all ... -cfg or -fdump-tree-vcg? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.2k views

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gcc - How to detect SSE/SSE2/AVX/AVX2/AVX-512/AVX-128-FMA/KCVI availability at compile-time?

I'm trying to optimize some matrix computations and I was wondering if it was possible to detect at ... these newer instruction optimizations. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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