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author | Han-Wen Nienhuys <hanwen@lilypond.org> | 2007-01-10 11:42:04 +0000 |
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committer | Han-Wen Nienhuys <hanwen@lilypond.org> | 2007-01-10 11:42:04 +0000 |
commit | a2c40dc7c0c52eaf6a58660a7c44665fdebba252 (patch) | |
tree | 66bdc814b4b315ca848b95e02f4645d693055cfb /libguile/throw.c | |
parent | 391f57e6ad53a2855b4f3ab270edd328da275dfd (diff) | |
download | guile-a2c40dc7c0c52eaf6a58660a7c44665fdebba252.tar.gz |
(scm_ithrow): print out key symbol and string arguments
when error happens inside a critical section, and document why.
Diffstat (limited to 'libguile/throw.c')
-rw-r--r-- | libguile/throw.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/libguile/throw.c b/libguile/throw.c index 115bb0c03..86e4d1fa7 100644 --- a/libguile/throw.c +++ b/libguile/throw.c @@ -37,6 +37,7 @@ #include "libguile/validate.h" #include "libguile/throw.h" #include "libguile/init.h" +#include "libguile/strings.h" /* the jump buffer data structure */ @@ -695,7 +696,24 @@ scm_ithrow (SCM key, SCM args, int noreturn SCM_UNUSED) if (scm_i_critical_section_level) { + SCM s = args; + int i = 0; + + /* + We have much better routines for displaying Scheme, but we're + already inside a pernicious error, and it's unlikely that they + are available to us. We try to print something useful anyway, + so users don't need a debugger to find out what went wrong. + */ fprintf (stderr, "throw from within critical section.\n"); + if (scm_is_symbol (key)) + fprintf (stderr, "error key: %s\n", scm_i_symbol_chars (key)); + + + for (; scm_is_pair (s); s = scm_cdr (s), i++) + if (scm_is_string (scm_car (s))) + fprintf (stderr, "argument %d: %s\n", i, scm_i_string_chars (scm_car (s))); + abort (); } |