Paul Eggert wrote:
> Thanks for mentioning that. I installed the attached to try to fix this.
The gzip CI now shows a compilation error on musl libc and on macOS:
gcc -DHAVE_CONFIG_H -I. -I../../lib -Wall -Wno-cast-qual -Wno-conversion
-Wno-float-equal -Wno-sign-compare -Wno-undef -Wno-unused-function
-Wno-unused-parameter -Wno-float-conversion -Wimplicit-fallthrough
-Wno-pedantic -Wno-sign-conversion -Wno-type-limits -Wno-unused-const-variable
-Wno-unsuffixed-float-constants -Wno-error -g -O2 -MT libgzip_a-quotearg.o -MD
-MP -MF .deps/libgzip_a-quotearg.Tpo -c -o libgzip_a-quotearg.o `test -f
'quotearg.c' || echo '../../lib/'`quotearg.c
../../lib/quotearg.c: In function 'chisprint':
../../lib/quotearg.c:105:10: error: implicit declaration of function
'c_isprint'; did you mean 'chisprint'? [-Wimplicit-function-declaration]
105 | return c_isprint (c);
| ^~~~~~~~~
| chisprint
make[3]: *** [Makefile:3158: libgzip_a-quotearg.o] Error 1
This patch fixes it. (Tested on musl libc.)
2026-05-26 Bruno Haible <[email protected]>
quotearg: Fix compilation error in USE_C_LOCALE code.
* lib/quotearg.c: If USE_C_LOCALE && C_LOCALE_MIGHT_BE_MULTIBYTE,
include c-ctype.h instead of <ctype.h>.
* modules/quotearg (Depends-on): Add c-ctype.
diff --git a/lib/quotearg.c b/lib/quotearg.c
index 1c31a1ec04..64850af1e1 100644
--- a/lib/quotearg.c
+++ b/lib/quotearg.c
@@ -72,13 +72,14 @@ typedef struct incomplete_mbstate *mbstate;
# define GNULIB_MBRTOC32_REGULAR 1
# endif
#else
-# include <ctype.h>
# include <wchar.h>
typedef mbstate_t mbstate;
# if USE_C_LOCALE
-# include <wctype.h>
+# include <c-ctype.h>
+# include <wctype.h>
typedef wchar_t wch;
# else
+# include <ctype.h>
# include <uchar.h>
typedef char32_t wch;
# endif
diff --git a/modules/quotearg b/modules/quotearg
index 7e61400ef1..02e54d989d 100644
--- a/modules/quotearg
+++ b/modules/quotearg
@@ -10,6 +10,7 @@ m4/musl.m4
Depends-on:
attribute
+c-ctype
c32isprint
extensions
gettext-h
