bagder/fcpp

Frexx C preprocessor

Hi, I'm Daniel!

I am and have been an avid open source supporter and developer since the mid 1990s. My code is almost guaranteed to run in your devices, in one way or another. I work exclusively on Open Source since many years.

I founded and lead the development of the curl project and I do spurious contributions in other network related projects like libssh2, c-ares and trurl.

I have authored the following books: Uncurled, everything curl, HTTP/3 explained and http2 explained.

File issues and pull-requests in any and all of the projects I participate in. Contact me via email at [email protected] on Mastodon or IRC in the #curl channel on libera.chat.

Everything about me and my projects are also available on my website.

🌟 GitHub star | 🏆 Polhem Prize | 🏆 Nordic Free Sofware Award | 🏆 Google Patch Award | 🏆 Sweden's 2nd best Developer

💚 Thank you awesome sponsors! 💚

fcpp's Issues

varadic argument

the following fails

#define MAC2STR(x) x[0],x[1],x[2],x[3],x[4],x[5]
#define FT_DEBUG(fmt, args...) if(pGlobalCtx && pGlobalCtx->debug_level>=2) printf("FT-dbg: "fmt, ##args)

FT_DEBUG("  %02x:%02x:%02x:%02x:%02x:%02x\n", MAC2STR(pCtx->wlan_intf_addr[i]));

gcc -E

if(pGlobalCtx && pGlobalCtx->debug_level>=2) printf("FT-dbg: "fmt, pCtx->wlan_intf_addr[i][0],pCtx->wlan_intf_addr[i][1],pCtx->wlan_intf_addr[i][2],pCtx->wlan_intf_addr[i][3],pCtx->wlan_intf_addr[i][4],pCtx->wlan_intf_addr[i][5]);

fcpp

Frexx C Preprocessor v1.5.1 Copyright (C) by FrexxWare 1993 - 2002.
Compiled Jan 18 2022
#line 1 "[stdin]"
cpp: "[stdin]", line 2: Error: #define syntax error
cpp: "[stdin]", line 2: Warning: Unexpected text in #control line ignored



cpp: "[stdin]", line 4: Warning: Wrong number of macro arguments for "FT_DEBUG"
;

Token-pasting support for number##identifier

This code:

#define K_DOUBLE(x) x##l
K_DOUBLE(0.5)

currently emits:

0.5�l

In an IDE the intermediate token is usually invisible leading to a very confusing compile error. However, it's just the TOK_SEP character being inserted where a concat operation hasn't been detected.

I've "fixed" the issue here: Celtoys@b6f4e10

That may not be the best way of going about this so would appreciate your feedback.

Thanks!