GCC

FIRST-HAND READS

What people reported, in their own words. Every line links to where it was said.

• “gcc has some of this type of optimization-dependent warnings, and it annoys the hell out of me”

  NEGATIVE · features · Hacker News · 2026-07-04

• “GCC makes some poor inlining choices (keeping a call to a function that writes a value to an address in a register instead of just writing to the register, ~5 instructions vs 1)”

  NEGATIVE · performance · Hacker News · 2026-07-02

• “Getting a recent GCC etc not to mess up calling stuff in the ROM was painful”

  NEGATIVE · ease of use · Hacker News · 2026-06-30

• “Porting the GCC stack to your OS is very rewarding initially”

  MIXED · features · Hacker News · 2026-06-24

• “you absolutely get a stack trace from unhandled exception in c++, that starts where the exception is thrown? At least with clang and GCC”

  POSITIVE · performance · Hacker News · 2026-06-14

• “I am quite certain that I will find ABI breaks in GCC release notes since Slackware 2.0”

  NEGATIVE · reliability · Hacker News · 2026-06-09

• “GCC 16 does not even issue a warning by default when compiling C code, which is just crazy”

  NEGATIVE · features · Hacker News · 2026-05-26

• “GCC error messages used to be horrible for anything but the most trival errors. A single C++ template error could span multiple screens and still not tell you the location.”

  NEGATIVE · ease of use · Hacker News · 2026-05-21

• “compiling with "gcc -O1 -S file.c" to see the assembly gcc generated”

  POSITIVE · features · Hacker News · 2026-05-10

• “MinGW and GCC implement the FileSystem library differently (I don't know why)”

  NEGATIVE · reliability · Hacker News · 2025-12-12

• “GCC would swap registers used for a variable, resulting in the Ksplice patch being larger than it had to be, to include handling the register swap as well”

  NEGATIVE · reliability · Hacker News · 2025-09-24

• “when optimised via gcc, is faster than my own compiler working on the original source”

  POSITIVE · performance · Reddit · 2025-05-19

• “I also have certain compilers that are less well-behaved than GCC and Clang in this respect.”

  POSITIVE · performance · Hacker News · 2025-02-13